查询词典 compositions

When do we have to give in our compositions?

我们什么时候必须上交我们的作文？

There are many spelling mistakes in your compositions .

你的作文有许多拼写错误。

In this paper,it explained the compositions,sources and dangerous of nitrate and nitrite in the vegetables , showed the mechanism of nitrate and nitrite accumulation,the influence factor , controlling measure in the vegetables on the literature investigation and study foundation.

本文对蔬菜中硝酸盐和亚硝酸盐的来源、危害以及蔬菜中硝酸盐和亚硝酸盐的累积机制、影响因素、控制措施等方面在文献调研的基础上进行了科学的阐述。

The compositions of fraction Ⅰ and Ⅱ were mainly petroleum acid methyl esters and aliphatic acid methyl esters with amide groups.

脂肪酸以C16和C18为主，单环环烷酸以C(下标 14~18)为主，四环环烷酸以C(下标 18~21)为主。

The process for Zn-Ni alloy electroplating in weak acid bath was investigated. The brighteners suitable for this system were developed. And the effects of bath compositions and process conditions on the composition of deposits were studied.

研究了弱酸性氯化钾－乙酸按体系电镀Zn-Ni合金工艺，开发了适于本体系的光亮剂，深入探讨了镀液组成及工艺条件对镀层组成的影响，获得全光亮Zn-Ni合金镀层的最佳工艺。

The difference of the activity coefficient of carbon caused by different crystalstructures is larger than that caused by different compositions of the alloys forthese welded joints.

对这类接头，晶体结构的不同所引起碳活度系数的差别，较之合金成分的不同引起的差别为大。

The mechanisms for AP of the main compositions of composite propellants with additives such as ammonium oxalate, strontium carbonate and AO/SC were studied by FTIR and DSC.

采用傅里叶变换红外吸收光谱和差示扫描量热法研究了草酸铵，碳酸锶及复配的草酸铵/碳酸锶等添加剂对复合固体推进剂主要组分高氯酸铵的作用机理。

Contact angle meter, scanning electron microscope, atomic force microscope and X-ray photoelectron spectroscopy are used to measure the wettability, microstructure topology and chemical compositions of polystyrene surface before and after air plasma treatment.

通过接触角测量仪、扫描电镜、原子力显微镜和X射线光电子能谱对处理前后表面润湿性、结构形貌和化学成分的观测。

In flame compositions, such as the stars that shoot out of rockets, potassium nitrate, salt s of antimony, and sulfur may be used;

火焰型烟火，如火箭喷发出的火焰，可采用硝酸钾、锑盐和硫磺。

Obtained the way of compositions are all based on the basic figures of circularity,quadrilateral and triangular,and all the landscape plane included balance,contrast,repetition,etc.Also combined the art of the formation of plane from Germans Bouhause with Chinese culture.

并且得出任何图形都是以圆形、方形、三角形为基础图形，任何景观平面中都包含了均衡、对比、重复等构图方式，并将源于德国包豪斯的平面构成艺术与中国文化相结合。

We are in a good position to meet your requirements.

我们完全可以满足你方的需求。

We are all pervade d with a sense of disaster.

我们普遍有大祸降临的感觉。