查询词典 steps

The industrial synthesis of 1, 4-butanediol from allyl alcohol involves two steps with low yield and selectivity.

目前工业上都是采用两步法由丙烯醇生产1，4-丁二醇，效率低，选择性差。

The new methods allow a wide range of poly analogs to be obtained in few steps, as the allylic precursors are readily available.

新方法允许范围广泛的聚类似物，以获得在几个步骤，作为烯前体是现成的。

Allylic oxidation was one of the key steps. Weemployed PDC +〓 combined system and gained better results. PathB is an absolutely new design.

烯丙位氧化是A路线关键的一步，难度较大，本文特别研究了用PDC+〓混合体系进行氧化，并取得了较好的结果。B路线是完全新设计的路线。

When it comes to harvesting the aloe itself, there are several steps to follow.

当谈到收获芦荟本身，有几个步骤，以遵循。

Next Steps to 1,500 word level - alphabetic listing .

下一步到1500字的水平-字母上市。

You enter a list of words and definitions (or use lists from Vocab-Flash, Vocab-Flash 2, Vocab-Flash 3, Web ActivityMaker or ActivityMaker 2), then follow the simple steps to create various quizzes, crossword puzzles, shaped word searches, scramble worksheets,"secret code" worksheets, riddle activities, alphabetize worksheets, study guides, definition fill-in sheets, and more.

您所输入的字词清单和定义（或使用名单，从vocab闪光， vocab闪光2， vocab闪光3 ，网络activitymaker或activitymaker 2 ），然后按照简单的步骤来创造各种测验，填字游戏，异形词的搜索，争工作，"秘密代码"工作，解谜活动， alphabetize工作，学习指南，定义，填写在表，和更多。

The computation of two-dimensional advection transport using current methods such as Alternating Direction Implicit Method and linear interpolation technique can be subject to numerical attenuation,parasite oscillation and poor reproduction of wave propagation when large time steps are used.

在概化的平面区域内，采用上述方法模拟了二维初始浓度高斯分布和水流激波在旋转速度场及均匀速度场上的对流输移问题，结果表明方法在优化幅值衰减和数值扰动以及计算效率方面具有相当的发展潜力和应用前景

Relationship between null and alternative hypothesis; Level of significance; typical steps of hypothesis test, two type errors, critical values.

教学目的：通过学习领会统计假设测验即统计推断的原理及其基本步骤，统计假设测验的两类错误及其关系。

Ambler 's parents applauded happily at its first steps.

漫步者的父母亲们满意地为它的人生第一步鼓掌喝彩。

Among the three steps, the activation of amino acid was the key step.

在这三步反应中，氨基酸的活化是最重要的一步。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。