母体

We found that Efron and Thisted's estimates tend to be less stable and slow in convergence. On the other hand, the estimates of Jackknife, Bootstrap, and Chao are likely to be over-biased.

研究发现Efron and Thisted的模型的估计量容易呈现不稳定的震荡，可能会有无法收歛的问题；而Bootstrap、Jackknife与Chao(1992)则会有高估母体种类数的现象。

The p-aminobenzene sulfpnamide group was connected to stilbene skeleton of stilbenes, and many twin drugs were prepared.

由拼合法将对氨基苯磺酰胺基团接到芪类化合物母体二苯乙烯骨架上，可得到多种孪生药物。

A piece of thread was tightly wrapped around the middle of a "mother" and knotted in such a way that there was thread on top and on bottom of the zooglea submersed in the tea.

丝片紧固缠绕在"母体"中间和在茶中浸没的菌胶团的顶部和底部有细丝交结，。

Moreover, I extend the sampling problems from one population to two or more subpopulation.

并且由单一母体的简单随机抽样，扩展到分层抽样的问题。

A white odorless crystalline sulfa drug; the parent compound of most of the sulfa drugs.

一种白色无味的水晶状磺胺类药物；主要由磺胺药物制成的母体化合物。

The radiation data suggest that the supernova's parent was a red supergiant.

这些辐射数据表明，该超新星的母体是一颗红巨星。

Sacrum Anterior means the fetal sacrum is closest to the mother's symphysis.

骶前意思是胎儿骶骨紧靠母体耻骨位置。

A double-T frame trap filter which contains a positive feedback is designed percolate syntonic of power frequency.Base on Butterworth function a high-pass and a low-pass filter...

通过Mu ltisim软件对所设计的陷波电路和滤波电路进行频响特性仿真，得到的频响特性曲线表明：所设计电路可成功滤掉工频干扰和母体噪音干扰。

The frame adopted for this survey was the telephone listings for the Taiwan Area. In order to avoid being unable to select those residences with unlisted telephone numbers, we first took a systematic random sample of telephone numbers, and then replaced the last digit with a random number. Respondents were chosen from within the selected household according to a set intra-household sampling procedure. The target for this survey was 1200 successful interviews.

本研究以台湾地区住宅电话簿作为抽样的母体清册，为避免未在电话号码簿上登记的用户无法被抽中进行访问的情形，抽样时首先依系统抽样的原则抽出某一电话号码，再以随机乱数取代此号码的尾数，作为访问的样本户，访问时再由访员依户中抽样的原则，抽出应受访的对象进行访问。

The frame adopted for this survey was the telephone listings for Tainan City. In order to avoid being unable to select those residences with unlisted telephone numbers, we first took a systematic random sample of telephone numbers, and then added one to the last digit. Respondents were chosen from within the selected household according to a set intra-household sampling procedure.

电话访问以台南市的住宅用电话用户作为抽样之母体清册，首先以等距抽样的原则抽出电话号码，为避免未在电话号码簿上登记的用户无法被抽中的情形发生，遂在抽出的电话号码的尾数加1，作为受访的样本户，实际访问时，访员再按洪永泰所设计的户中抽样原则抽出受访对象。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失