查询词典 optional course

It can be concluded that to meet with the ideal separation effect in a relative short period, the following optional selection of experimental conditions should be carried on strictly: centrifuge rotor and gradient medium, which will influence separation capability; gradient density range, shape and slope, which is very important in separation degree; the methods of reorienting rotor,low and high rotor speed exchange and Gmax could be used in order to shorten separating time.

通过研究认为在相对短的时间内要达到理想的分离效果，应该对以下实验条件进行优化选择并严格控制：包括实验中影响分离本领的转头、梯度介质选择；为获得满意分离度应严格选择梯度的密度范围、梯度形状以及梯度的斜率；为了缩短分离时间，可采用重定向梯度、二次变速及Gmax等方法。

Through to the simulation of the model, we can analyse enterprise's optional selection tactics set and corresponding selection cost value, and the candidate quantity that may attracted under the tactics when the rival's selection tactics change. The model can offer intelligent decision for the enterprise to optimize CIO selection mechanism and change the tactics of selecting.

分析了企业CIO甄选机制的内涵，根据定性建模方法和博弈论有关原理，基于CIO人力资本与企业的博弈行为构建了企业CIO甄选筛选博弈模拟模型，并对模拟结果进行了分析，研究构造企业CIO甄选机制时应考虑的因素，以合理设计企业CIO过滤功能，实现对CIO人力资本完全成功的分离均衡。

By 1937 Zeiss listed about 20 high quality monocular, binocular and stereo microscope configurations in their literature. And they also marketed a wide selection of optional attachments and illuminators including at least 33 objectives of from 2X to 120X, and about 20 eyepieces of Huygens, Orthoscopic, and Compensating designs of from 3X to 30X.

1937年，蔡司文献上就已经有了大约20种高品质单目望远镜、双目望远镜和立体显微镜，并且还有很多可选的光学配件，说明书中列出了至少33种2倍到120倍物镜（其中包括6种为使用萤石型），至少大约20种3倍到30倍的惠更斯型，无畸变型(直线型Orthoscopic)，和补偿型目镜。

This is optional, so don't need to worry.

这是可选的，所以不必担心。

It is optional with you.

那是你的自由。

I'm not planning to get it, because like you said, music is optional.

我不打算得到它，因为像你说的，音乐是可选的。

This step is optional, but it's good practice regardless.

这一步是可选的，但它的良好做法，不论。

This one or two women and one optional unit ...

这一个或两个妇女和一个可选的单位，。。。

Memory is optional, is not it?

记忆是可以选择的，不是吗？

I can improve the system if I want to, but that's optional.

如果我愿意我能改善这个系统，但那是可自由选择的。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。