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We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先,我们在一些假定下证明OLS估计量无偏性。

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Citation analysis is a special and useful research method in Bibliometrics and Scientometrics.

引文分析是传统文献计量学和科学计量一种独特研究方法。

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In the presence of impurities or in a nonstoichiometric solid, free electrons or electron holes are produced as a result of “charge compensation” to neutralize the effect of charged ionic defects 。

在杂质存在情况下,或在非化学计量固体中,为了中和带缺陷所引起荷不平衡,便空穴。

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This paper described the basic concept and expressions of the decibel and Neper. It also explained some merits of the calculation rntes and Application ranges of the measuremeut Units.

本文阐述了分贝与奈培基本概念和表示方法,同时还说明了该计量单位优点、计算法则和应用范围。

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The paper expounds in detail the relation between oil density and metering and suggests that it is necessary to propagand metrical knowledge to customers.

详细阐述了油品储存收发过程中密度与计量关系,并提出了向客户宣传计量知识必要性。

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Odorization pumps are specially designed diaphragm plunger metering pump, plunger travel of the exercise machine lock, each time to maintain a constant output.

加臭泵是专门设计隔膜式柱塞计量泵,柱塞运动行程机械锁定,每次输出量保持恒定。

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Introduces the structure, characteristics of LGQ type gauger, and the situation of measuring water and sulphuric acid in SSP production.

介绍LGQ型计量结构、性能,以及在过磷酸钙中用于水和硫酸计量情况。

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We describe a subfringe integration interferometry for which the phase information is evaluated only from one interferogram.

叙述了次条纹积分干涉计量原理,仅用一幅光载频干涉条纹图获取全部位相信息。

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历年考研英语阅读选择真题(英语一)

And, unless banks carry toxic assets at prices that attract buyers, reviving the banking system will be difficult.

银行如果不以能够吸引买家价格不良资产,银行系统复苏将会困难。

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美国历史频道纪录片《宇宙》

This dwarfs anything on the human scale.

这使得在人类世界范畴相形见绌。

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VOA Special 2022年8月合集

A carat is a weight measurement used only with some valuable minerals.

克拉是一种只用于测某些贵重矿物重单位。

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6 Minute English 六分钟英语

The amounts are so big they're measured in gigatonnes-that's a billion metric tonnes.

过大以至于它们是用兆吨——它相当于100万立方吨。

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当月 CNN 10 学生英语 2021年1月合集

European countries are furious at pharmaceutical giant AstraZeneca after it announced that it would be delivering far fewer doses of its vaccine to the EU than expected.

欧洲国家对制药巨头阿斯利康感愤怒,因为该公司宣布向欧盟提供疫苗比后者预少得多。

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VOA Special 2019年7月合集

More modern measures include the number of mobile phone applications and high-technology exports produced.

还有更多现代,如手机应用技出口

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Veritasium真理元素

Bureau of Weights and Measures on the outskirts of Paris.

保险箱在国际地下室里。 最後,国际局在巴黎郊外。

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奇思妙想物语

Let's say I'm measuring my points per game.

假设我在我每场比赛得分。

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摩登家庭第三季_Modern Family-Season03

It's a unit of measurement we used on the farm.

这不过是我们农场上方法。

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CNN 听力 2022年9月合集

The bottom meter score is from zero to five.

底层分数是从05。

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CHERNOBYL HBO

Have them use the good meter from the safe.

让他们用保险柜里完好表。

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1.哈利波特与魔法石

Hagrid wouldn't let Harry buy a solid gold cauldron, either (" It says pewter on yer list" ), but they got a nice set of scales for weighing potion ingredients and a collapsible brass telescope.

海格也不让哈利买一只纯金锅(购物单上开是锡鑞锅),不过他们买了一台药品很好天平和一架可折叠黄铜望远镜。

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Scishow 精选系列

For example, one 2015 study found that 100 adults who drank a high cocoa chocolate drink twice a day for one month had a drop in blood pressure of around 4 millimeters of mercury, which is a measure of pressure.

例如,一项2015年研究发现100名成年人持续一个月,每天喝两次可可含巧克力饮料,其血压下降了4毫米汞柱,毫米汞柱是血压单位。

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经济学人(汇总)

Thanks largely to their big cities, housing appears to be more than 40% overvalued in Australia, Britain and Canada, according to the average of our two measures.

两种方法得出平均值显示,澳大利亚、英国、加拿大住房价格似乎被估了40%以上,这很大程度归功于这些国家大城市。

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学大揭秘

However, better fuel metering, injection, and combustion technology have ensured that most modern-day engines are smaller in size, yet more fuel efficient and powerful than their predecessors.

更好燃料、喷射和燃烧技术确保了大多数现代发动机体积更小,同时比之前发动机更省油、更有力。

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VOA视频精选

In a vote this Friday, scientists from the General Conference on Weights and Measures are expected to vote unanimously to say goodbye to that kilogram weight.

本周五召开国际大会上,学家们将一致投票决定告别这种定义千克方法。

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万物简史

The basic unit of measure in the solar system is the Astronomical Unit, or AU, representing the distance from the Sun to the Earth.

太阳系里基本单位是天文单位(AU),代表太阳和地球之间平均距离。

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《环球时报》阅读精选

Now, among these feline residents, one named Papa has recently taken on a new role - as a unit of measurement for cultural relics.

现在,在这些猫居民中,一只名叫帕帕猫最近承担了一个新角色——作为文物单位。

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读者文摘选编

How to check your car tire's pressure (though the gauge he bought me 20 years ago still sits untouched in my glove box).

如何检查汽车轮胎气压(尽管他20年前给我买器现在还没动过,放在我手套箱里)。

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经济学人-

Participants rated the various traits on another one-to-seven scale, with one indicating not at all desirable and seven meaning extremely desirable.

参与者用另一个一七级方法来给不同特征打分,其中一表示不那么渴望,七意味着极其渴望。

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