选择性

It flamed up and went out alternately for about ten minutes.

它燃烧了以来，10分钟之内又有选择性地熄灭了。

A problem with alternative medicine is, of course, that of anecdote and hearsay.

有选择性药物的一个问题当然是轶事和道听途说的。

Furthermore, low 〓 more pronouncely suppressed the responses of ON-OFF type amacrine cells to green flashes than those to red flashes.

同样，对于ON-OFF型无长突细胞，低钙选择性地压抑这类细胞对绿光的反应。

To avoid an undesirable status, a lesbian may marry a man, but the relationship is ambiguously consensual in light of the alternatives.

女同性恋者为了免于陷入尴尬的处境，可能会和男人结婚。但是这种婚姻关系的建立就其选择性来看，并非是她所情愿的。

The effects of rare earth elements on Reformation of amination -catalyst for fatty alcohol were analyzed in this paper.

研究表明，稀土元素具有和镍相反的对高沸物成分的抑制作用，稀土元素的加入普遍提高了脂肪醇胺化反应的选择性。

The key technology of the catalytic amination process of fatty alcohols is the amination catalysts with high selectivity.

催化剂的关键性能是其选择性。

The main improv ing target of the amination catalysts is to promote their selectivity.

改进脂肪醇胺化催化剂的主要目标是提高其选择性。

The selective amination of ethylene oxide to ethanolamine has become a hot spot in amination reactions in recent years.

环氧乙烷选择性胺化制乙醇胺成为近年来胺化反应的热点课题。

This paper reviews the recent progress of all kinds of reductive amination methods and their ap-plications in organic synthesis, particularly emphasis on the introduction to the reductive amination with high efficiency and high selectivity.

综述了近几年来各种还原胺化方法的研究进展及其在合成中的应用，尤其对高效和高选择性的还原胺化进行了重点介绍

In order to avoid forming morpholinium compounds as well as pipe-blocking by TEDA, MEOA was co-fed by 18% of ammonia and 50% of water.

研究表明当反应温度在330~380℃内变化时， TEDAMAX-01的活性和选择性随反应温度的提高而增加。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。