周期

Microgram for microgram, beryllium is one of the most toxic elements on the periodic table.

一微克，又是一微克，铍是周表上最有毒的元素之一。

The first application is the analysis of aircraft longitudinal long-period oscillation named phugoid phenomenon.

第一个应用是分析名为复古现象的飞行载具纵向长周振动。

The yield of the pseudoionone and ionone was 96. 2% and 97. 6% respectively.

反应条件温和,周短,缩合反应的产率达96.2％,环化反应的产率达97.6％.

Periodic only 7 - 10 days, shorten than traditional method a day above, raciness.

周仅7-10天，比传统方法缩短则天以上，风味好。

Finally, variance analysis is used to verify the validity of the crytic model.

最后，利用方差分析周检验方法作了印证性讨论。

Long long ago, we knew the periodic motion of a planet.

很久以前, 我们就知道行星的周运动。

The business cycle is a series of peaks and troughs.

商业周是一系列的高峰和低谷。

In eastern China, transgression occured periodically during Eogene, and formed specially paleobio-cenosis,mineral association and rock type.

国东早第积演化过程曾周性地发生过海侵,从而形成了具有海相特征的岩石类型、古生物组合。

All of the genes necessary for the lytic cycle are expressed in polycistronic transcripts from three promoters.

编码噬菌体结构成分的基因则排列为簇。裂解周所需要的基因则以个启动子起以多顺反子转录的形式表达。

The present paper using upper and lower solutions,proves an existence theorem of almostperiodic solutions for integrodifferential systems.

采用上下解方法，给出了一个积分微分系统概周解存的一般性定理。

Base on this structure, the photoresponse of each spectral shape is tunable by the period of gratings.

我们可以利用各种不同周的光栅结构来调变响应的波形。

Two pulse generators, the Gaussian pulse generator and the monocycle generator, are designed, fabricated, and experimentally demonstrated.

接著设计可产生高斯脉冲及单周脉冲的脉冲产生器。

Artificial credit expansion — credit not funded by savings — creates the business cycle by spawning capital malinvestment.

虚假的信贷膨胀——不是通过储蓄创造出来的信贷——通过制造了大量资本的错误投资而导致了商业周。

Wernerians thought strata were deposits from shrinking seas, but James Hutton proposed a self-maintaining infinite cycle, anticipating uniformitarianism.

沃纳里恩斯认为地层是收缩的海洋的积物，但詹姆斯•赫顿提出了一个自我维持的无限周，促进了地质均变论的发展。

Methods The level of somatostatin was measured in uterus and blood of mouse during genesial cycle by radioimmunoassay.

方法应用放射免疫方法检测小鼠生殖周不同阶段子宫和血生长抑素的水平。

Using surface fermentation method to produce apple vinegar,its acidation and alcoholization is the same as liquid deep fermentation method.

表面发酵法生产苹果醋,其酒化和醋化过程与液态深层发酵法相同,但发酵周较长。

Economic crises recur periodically.

经济危机周性地发生。

The geyser erupts periodically.

间歇泉周性地喷发。

It is 9 major planet run the great synodic period in the youngest covering of the fan 180 years.

一百八十年是九大行星运行到最小扇面之内的大会合周。

Has the long period of credit expansion—dubbed the “debt supercycle” by Martin Barnes of Bank Credit Analyst—come to an end?

长的信用扩张——被银行信用分析师MartinBarnes称为“债务超级周”——会画上句号吗？