查询词典 a trace

She put the letter into her pocket and offered her visitor a smile of welcome, exhibiting no trace of discomposure and half surprised at her coolness

她把信塞在口袋里，向客人发出了欢迎的微笑，没有泄露一丝心绪不宁的痕迹。对这种镇静，她自己也有些吃惊。

Moreover, the trace of academic transplant is obvious, so there is a prodigious disjunction in the criminal constitution theory in China.

但各种理论硬性移植的痕迹比较明显，与我国现行的犯罪构成理论有很大的脱节，因此有必要依据我国的犯罪构成理论来进行探讨。

It is very difficult to eliminate these influence factors completely by conventional treatment. Surface properties and surface treatment of ultrafine red phosphorus and MMT and their interface properties with polymer matrices were studied in this thesis. The results were characterized by GC, FTIR, XRD, DTA, TG, XPS, UV, SEM, TEM and other physical and chemical methods. The main contents are as following: 1. The study of factors influencing ultrafine red phosphorus's invariability and phosphine liberation indicated red phosphorus undergone oxidation and dismutation reaction in air, and trace ion of iron, copper and nickel fastened water absorption and oxidation, in which the effect of copper ion was the most, while aluminium and zinc ion could slow down red phosphorus'oxidation, and silver ion had the best effect on red phosphorus moisture absorption. Inhibitors such as aluminium hydroxide, magnesium hydroxide, organic phenol and ferrous potassuim cyanide had a good effect on reducing red phosphorus moisture absorption and restraining phosphine liberation.

本文围绕纳微米材料的表面处理及其在高聚物基体中的应用这一主题，系统地研究了超细红磷和蒙脱土两种常见材料的表面特性、表面处理方法及其与高聚物基体的界面特性，通过气相色谱、红外光谱、X射线衍射、差热、热重、X射线光电子能谱仪、紫外光谱、扫描电镜、透射电镜等现代分析仪器以及其它物理、化学方法对实验结果进行了表征和分析，全文主要内容如下： 1、对影响超细红磷安定性的因素以及磷化氢的缓释研究表明：红磷在空气中发生缓慢氧化、歧化反应，微量的铜、铁、镍等金属离子增加了它的吸水和氧化速度，其中铜离子的作用最为明显，而铝、锌等离子减慢了红磷的氧化速度，银离子对减少红磷的吸湿性效果最好。

The dramatis personae of the story is a 25 years-old girl, called XiaoYu who is under the pressure of living. There is no trace of being young on her face any more.

故事梗概：故事的主人公小雨是一个二十五岁左右的女孩，由于生活的压力在她的脸上早已看不到这个年龄的女孩该有的光泽和朝气。

When connected to a suitable dual trace oscilloscope the display shows in real time the valve, cylinder and injector activity in any two or four stroke, gasoline or diesel internal combustion engine.

当把该传感器连接到合适的双通道示波器时，可以显示任何发动机实时的气门，汽缸和喷油嘴活动。

The buildings with their different parts, the temple, and everything else vanished from my sight, leaving no trace whatsoever, and in their stead I saw a limitless, infinite, effulgent Ocean of Consciousness.

建筑物的不同部位，庙宇和所有一切都从我的视域中消失，再也没有留下痕迹，取而代之的是看见了无穷无限和光辉灿烂的意识海洋。

Samples of Austen's early writing from the epistolary Love and FriendshipA Collection of Letters allow readers to trace her growth as a writer as well as to read her fiction comparatively.

奥斯汀的早写作的样品-从书信的爱和信的 FriendshipA 收集-让读者追踪如一位作家的她的生长并且比较地读她的小说。

This is a typical trace of rain erosion.

这是典型的雨水侵蚀痕迹。

In this study, a rapid method for the determination of trace estrogens (ethinyl estradiol, estradiol, estriol, and estrone) in cosmetic water by LPME coupled with high performance liquid chromatography was developed.

建立了液相微萃取-高效液相色谱联用测定爽肤水中痕量的雌三醇，雌二醇，炔雌醇和雌酮的分析方法，研究了萃取溶剂种类，接受相体积，搅拌速度，萃取时间等对萃取效率的影响。

An etymologist can trace the origin and development of a word, but who can identify the moment when absolutely took off?

一名词源学家可以追踪一个词的源头和发展；但是谁能发现"肯定"什么时候流行的呢？

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷