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Methods To collect data by cluster sampling and analyze data by polychotomous Logistic regression.

方法采用整群抽调查搜集资料,采用多分类回归分析筛选影响因素。

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Conduct operation including sampling, mounting, polishing, etching, microscope inspection, hardness testing, NDT testing (magnaflux particles, ultrasonic etc).

协助工程师进行材料测试,报告以及分析.

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To avoid sampling bias, they restricted their analysis to one group of animals—the bivalve molluscs—that fossilise well.

为了防止取偏颇,他们将分析对象限制在一类化石记录保存完备——双壳类软

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Active carbon tube adsorption were used for sampling of methacrylonitrile, then thermal desorption analysis was performed by GC(FID).

活性碳管吸附空气中甲基丙烯腈,热解吸后气相色谱(FID)测定。

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Based on screening and sampling,properties of trass and trass concrete in Ximeng area of Inner Mongolia was studied.

通过筛分选,对内蒙古锡盟地区大量蕴藏火山渣及火山渣混凝土进行了材料性能实验研究。

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It is calculated as half of the value of the sampling rate.Passing this level causes aliasing distortion, or foldover.

计算方法是将采率除以二,超过这个数值将会导致折叠失真,或称折叠。

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This paper presents a sampling and collecting high speed cloud echo data method using a monolithic processor for laser ceilometer.

本文介绍了激光测云仪中用单片机实现云回波信号高速数据采集方法。

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In sampling, we choose a small number of items which we think are typical of the whole and examine the sample.

在采时, 我们选择少量我们认为是代表整西, 并对这个本进行研究。

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The error estimation of the quasi-synchronous sampling harmonics anal-ysis and the method used for measuring the subharmonics of periodic signalsare also discussed.

文中还对测量误差作了分析和估计,并介绍了测量分数次谐波一种方法。

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This bead fusion method is a perfect sampling method for ICP, AA, as well as for indissolvable samples in wet chemical analysis.

对于ICP、AA和湿法化学分析手段,对于难溶品,熔融方法同是一种非常完美手段。

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The malignant mesenchymoma is not rare actully,but owing to the one sidedness of sampling,it is always diagnosed pathomorphogically as one singletissue sarcoma.

恶性间叶瘤并不少见,但由于病例取材局限,每把此肿瘤诊断成一种组织肉瘤。

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A combustion-driven entrained flow reactor equipped with an optical particle-sizing pyrometry diagnostic and a rapid-quench sampling probe has been used for this investigation.

这里使用试带有光学测温元件和快速淬火取探针气流床反应器。

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Program goals include teaching the sharks to swim into a shallow stretcher and remain calm for medical exams, morphometrics, and eventually diagnostic sampling.

计划包括训练鲸鲨游入近水面运送架,并在医护检查、形测量和抽取化验本期间保持安静。

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Superpopulation model is a bridge between survey sampling and other branches of statistics.It is helpful to study sampling theory with the tool of superpopulation models.

摘要超总模型是抽理论与统计学其它分支联系桥梁,借助于超总模型研究抽理论是一个有前途方法。

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Via examining, have 40 kinds eligibly, sampling percent of pass is 58.8% , among them 10 kinds belong to the product with quality serious problem.

经检验,合格有40种,抽合格率为58.8%,其中有10种属于质量问题严重产品。

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In this survey, we take cosmetician as our sampling group and design a series of the questionnaires to know their acceptance of the information technology.

中文摘要美容医学诊疗产业是一个以带人类健康为目之产业。

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The flow model of single phase flow in the elbow of the vertical tubular leacher was studied by using NaCl solution tracing and microcomputer sampling.

用盐水示踪、微机采来研究垂直管道浸取器回弯头内单相流模型。

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Indicate epidemiology investigation , confirm on the grounds of international sampling investigation, major part in the cancerogenic patient who has a smoke is a passive smoker.

流行病学调查表明,据国际性调查证实,吸烟致癌患者中大部分是被吸烟者。

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Nasal cannulae are now aailable with a separate tube that can be attached to the sampling probe from a capnograph, thereby allowing for end-tidal CO2 monitoring.

鼻导管可以单独连接到二氧化碳分析仪上采,行呼气末二氧化碳监测。

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剑桥学霸读书分享

And so if I had my time again, I'd be sampling more of those experiences.

所以如果还有时间,会尝试更多这的体验。

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物学基础入门

But this time, you would use random sampling instead of a transect method we saw before.

但这一次,你将使用随机抽而不是之前看到的带状统计法。

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VOA Special 2019年9月合集

Scientists have also used eDNA sampling as a tool to study sea life like whales and sharks.

科学家还将eDNA水作为研究鲸鱼和鲨鱼等海洋物的工具。

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万物简史

Either way, what we possess is the merest sampling of all the life that Earth has spawned.

无论如何,握的只是地球所产的所有命的最起码的品。

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科学60秒 2018年4月合集

They are just sampling each cryptocurrency proportional to its market share.

只是对每种加密货币的市场占有率进行抽。”

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Crash Course 天文篇

Chemical sampling could then look for signs of biological activity.

通过化学取寻找物活动的迹象。

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剑桥学霸读书分享

I would think of them as sampling different types of experiences.

认为它能让你尝试不同类型的体验。

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Osmosis-遗传

It can be done before birth via chorionic-villus sampling or amniocentesis.

它可以前通过绒毛膜-绒毛取或羊膜穿刺术完成。

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VOA慢速英语_健康

The team, which is financed by the British government, plans to expand its sampling to at least 70 schools.

该团队由英国政府资助,计划收取至少70所学校的本。

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简单心理学

Only three percent of those customers actually bought jam after sampling it.

只有 3% 的顾客,品尝后购买了果酱。

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VOA Daily Standard 2023年3月合集

The margin of sampling error for all respondents is plus or minus 3.7 percentage points.

所有受访者的抽误差范围为正负3.7个百分点。

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TED演讲(音频版) 2015年3月合集

Instead, our brains are sampling just a little bit of the world.

相反的,的大脑只对 现实世界的一小部分“浅尝辄止”。

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环游世界

You should reward yourself for packing so well by sampling Iceland's delicious cuisine.

行李准备得如此完备,不如品尝冰岛的美味佳肴来犒赏自己。

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透视百科综合类

Sampling devices, positioned throughout the test area, yield valuable information to chemical core researchers.

装置遍布整个测试区,为核心化学研究员提供有价值的信息。

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经济学人-科技

But maximising diversity is unlikely to mean sampling every part of the world equally.

但最大限度地提高多性不太可能意味着对世界各地一视同仁。

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环境与科学

A blood or urine test gives us information about the few hours before the sampling.

血检或尿检可以给提供取前几个小时的信息。

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Crash Course 天文篇

But that's just the narrowest sampling of all the different wavelengths light can have.

但这只是所有不同波长的光中的最窄的一类。

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昆虫王国第二季 (原声版)

I'm here sampling this bromeliad. I have to find out what lives in it.

给这棵凤梨取看看都有什么里面安家。

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CRI线 2015年2月合集

The tests have involved modulating the speed, height and orbit needed for a moon sampling mission.

试验包括对月球采任务所需的速度、高度和轨道运行进行调整。

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物学基础入门

And the sampling techniques used depend on the habitat and the type of organisms present.

所使用的采技术取决于栖息地和存物类型。

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