从头

Theoretic studies on dissociation of propyne at 157 nm were performed.

从头算方法对丙炔在157nm光照下的一个光分解途径C3H4→CH3+C2H进行计算研究。

Theoretic studies on dissociation of propyne at 157 nm were performed.

用从头算方法对丙炔在157nm光照下的一个光分解途径C3H4→CH3+C2H进行计算研究。

The pink flush was in her face, and she quivered from head to foot.

她脸上升起了一阵红潮，从头到脚都在颤栗。

If a linked image is changed, the newly generated file size might differ from the original, it is not as large as the relink after image may be distorted.

如果不兵链接的图像保持了，鼎盛不败的文件尺寸不定会与本来的不不同不小，这样从头链接后图像不定变形。

Freehand has a cutting tool, the picture may not be used, a graphic image after relink will return to its original condition.

Freehand洋有一个切图片的工具，不克不及用，图形图像经功从头链接会恢复原状。

Are you covered for that or would you have to renegotiate with your users / writers?

你是否已经涵盖了这些？年夜概你是否必要从头与你的用户/作家构和？

We explore the relation between structure and activity , structure and toxicity from electronic structure and three—dimensional conformation in order to provide theoretical foundations for predicting the activity and toxicity of these chemical compounds, researching into mechanism of action and choosing safener.

通过比较四种均三氮苯类除草剂的红外光谱特征吸收的实验值和计算值，并运用规范不变原子轨道法GIAO法在RHF/6-31G水平上计算出西玛津的δ~1H-NMR和δ~(13)C-NMR，与实验值的对比统计分析，结果表明：用RHF/6-31G优化的分子构型最佳，AM1法次之，考虑到优化时间和研究的需要，我们在研究均三氮苯类除草剂分子的结构与活性关系时，为了进行深入、精确的理论研究，采用从头算RHF/6-31G进行优化；而对于此类化合物的结构与毒性的关系研究时，更注重分子的量子化学参数的相对值而非绝对值，因而采用AM1的方法。

We will now write an XML schema file from scrat ch.

我们现在将从头编写一个 XML schema 文件。

If he scratches his head, you scratch your head.

如果他搔搔头，你从头开始你的头。

Shearwaters forsake a life of ease to a journey that even kills them, so don't be scared.

不要担心来自未来的恐怖，因为它们根本就不存在。我要从头开始。

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。