查询词典 sampling

Antenatal diagnosis by Chorionic villus sampling can be done.

产前诊断由绒毛采样是可以做到的。

The result showed that the best time for sampling was 7 to 14 days after the first bud flowering on the main anthotaxy. The capacity of embryoid production varied significantly in different genotypes. Among them, twelve genotypes yield embryos successfully, which the rate could reach 71%. Genotype 102 was an ideal material for embryoid induction, and the frequency could reach 32.78 embryos per bud. Genotype that with a highest yield produced 546 times as many embryos as that with a lowest yield. The embryoid induction ability of normal bolting genotypes were higher than easy bolting and hard bolting genotypes.

结果表明：在秋冬季日光温室内，供试植株主花序第一朵花开后第7~14天取样，即初花期是最佳取样时期；不同基因型间小孢子胚胎发生能力差异很大，在接种的17个基因型中，有12个诱导出胚，诱导成功率71%；其中102号产胚量最高，达到32.78个／蕾；在已产胚材料中，产胚量最高的基因型是产胚量最低的基因型的546倍；较易抽薹型材料的产胚能力大于易抽薹型和不易抽薹型。

The paper analyzes the principle of anti-aliasing and full period sampling, and then puts forward the implement projects.

论文中对这每个模块的电路设计和程序设计分别进行了论述。

This paper proposes Latin hypercube sampling combined with variance reduction techniques of conditional expectation and antithetic variates to assess ultimate strength reliability of ship hull girder.

本文将拉丁超立方抽样法与条件期望和对偶变数方差减缩技术组合用于分析船体总纵极限强度可靠性。

The effect of the steel sector weight is more apparent in period of an expansion cycle compared to that in a period of a whole economic cycle. The hypothesis was further confirmed during the course of data sampling. Overall, in the various stages of the economic cycles, as the weight of cash deposit decreases, the expected return of portfolio amplify, while the overall risk raises as well.B. The optimal asset allocation strategy, which is subjected to the current rules and regulations, imposed the authority.

若进一步允许风险值趋近於0，适度增加风险以期获取更高报酬，实证显示全循环期与景气扩张期之债券投资部位略降，惟仍达82%以上，其中全循环期之股票类股比重由2.7%增加至9.8%，且由原配置在钢铁类股增加塑胶类股有分散类股之效果；而景气扩张期之股票部位由比重3.4%，经调整VaR值后，比重增加至15.5%，分别配置在钢铁类、金融保险、电子及塑胶等四类股以钢铁类股比重较高。

The methods for sampling, analyses and source apportionment of particulate in air were described in detail.

研究了宁波市环境空气中颗粒物的浓度水平、粒径分布、组成特征及污染来源。

ABSTRACT This paper presents results of online identification of hydrogenerators, a long-term running robust self-tuning regulator of generator excitation, governor power system stabilizer decoupled in multimachine systems, and an adaptive GPSS designed in frequency domain. 1. It presents a step-by-step zero cancellation method , accuracy weighted recursive least squares and approximate RLS algorithms, inferior limit of sampling time.

针对发电机励磁和调速系统建模与控制，针对多机电力系统的稳定性，本文综述了自适应控制理论及其在电力系统中应用的现状和发展方向后，在辨识、自适应控制结构和鲁棒性提高的措施上进行了研究，取得了水轮机调速系统现场辨识的成功，获得了长期稳定运行的鲁棒励磁自校正控制器、多机解耦的调速侧电力系统稳定器和频域设计的自适应GPSS。

The algorithm is implemented by Fourier transform to obtain the real part and imaginary part of voltage based on digital sampling; and by trigonometric function to gain the sine or cosine dynamically; and then by Taylor series binomial of arc sine function to acquire the actual angle.

通过对数字化采样进行傅立叶变换获得电压的实部和虚部，动态地求取相位角的正弦值或余弦值，然后采用其反函数的泰勒级数二项式得到相位角度。

Wildlife survey method; argali survey; map strip sampling

中文关键字：动物调查方法；盘羊调查；图样带法

Make the use of AD7730 and dsPIC30f6010A to compose the sampling and arithmetic unit of the electron belt weigher.

利用 AD7730和 dsPIC30f6010A 构成电子皮带称的采样和运算单元。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。