抽取

The activation energy of B ring elementary reaction is between 16～20kJ/mol.

从IRC结果以及对过渡态结构的电子密度拓扑学分析结果可以确定，羟基自由基在反应过程之中抽取了黄酮类化合物A环上未参与分子内氢键结构的酚羟基上的氢原子形成水分子及稳定性更高的半醌式大环自由基，在整个过程之中羟基自由基从反应物一侧进攻并逐渐发生扭转，直至形成一个进平面结构的过渡态结构，这与上一章关于黄酮类化合物B环的研究结果基本一致。

As Beck points out in the introduction to his book, the individual practices of XP are drawn from well-known, well-tested, traditional practices.

就象Beck在他书中所写的简介中指出的一样，XP中的各个独立实践，都是从著名的，经过很好的测试的，传统实践中抽取出来的。

Firstly,establish the ecological environmental protect strip around the lake,efficiently deal with the farmland drainage.Using the pump station at the end of gutter pumps water to irrigate reed wetland.To practice man-made raising reedland.Using biology to clean up water to reduce salinity,nitrogen and phosphorus.To desalt the Beston Lake water.

首先要确立环湖生态环境保护带，使大部分农田排水得到有效处理，利用排水沟末端的扬排泵站抽取农田排出的水灌溉湖滨沼泽芦苇，实行人工育苇，利用生物净水作用减少入湖盐量和脱氮除磷，促进博斯腾湖水质淡化。

The farmer siphoned water from the cellar into the ditch.

农夫从地窖中抽取水至水沟中。

The QOL data of 448 cancer patients were analyzed by the methods of coefficient of variation, factor analysis, clustering analysis, and correlation analysis.

随机抽取恶性肿瘤患者448人，采用变异度法、因子分析、聚类分析和相关分析等统计学方法对结果进行分析。

The oil extraction rod is connects the pumping unit and the oil pump transmission device, Through reciprocal motion extraction petroleum.

抽油杆是连接抽油机和抽油泵的传动装置，通过往复运动抽取石油。

Then it gives a border tracking method using two edge operators to track the border of feature area.

提出了一个在二维数据场中进行特征边界跟踪的方法，采用2个边界算子抽取边界，用树形结构表示特征边界之间的关系，用Fourier描述器描述特征边界并重构。

This exposes the tube to the ground but when the tube is pumped up the tire seals the tube.

这暴露了管地面但是，当管所抽取轮胎密封管。

A triangle strip is extruded backwards and forwards in time such that the middle triangle is always at the current time.

沿着运动时间抽取一条三角条带，中间三角形代表当前时间三角形的位置而前后的三角形分别代表过去和未来的三角形位置。

As each section of the triangle strip is extruded, it is given an alpha value based upon how much time has elapsed between the time represented by this section of the strip and the current time (the triangle in the middle of the forwards and backwards strip).

在三角条带的每一段都被抽取出来后，它被赋予一个 Alpha 值，该值由这个条带代表的时间和当前时间的时间（处于过去条带和将来条带之间的三角形代表的时间）差来决定。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。