查询词典 second-rate

SEM of new and used second instruments revealed signs of metal fatigue on both new and used second instruments.

新的和二次使用器械的SEM显示两者均具有金属疲劳的迹象。

The first part - introduction, metasomatism background, The second part, after 80 consumption group consumption psychology and behavior, The third part, through the description of the second part after 80 consumer groups to reveal the influence of different aspects of advertising creative, The fourth part, through the front of modern advertisement should be further discussed how to innovate, seize after 80 consumer groups.

第一部分—引言，交代时代背景；第二部分，阐述80后消费群体的消费心理和行为特征；第三部分，通过第二部分的描述揭示80后消费群体对广告创意不同方面的影响；第四部分，通过前面的说明进一步论述现代广告应如何创新，抓住80后消费群体。

Silicon phthalocyanine dihydroxide was prepared from silicon phthalocyanine dichloride through two methods. The first was alkali treating that meaned silicon phthalocyanine dihydroxide was treated in the ethanol solution containing sodium methylate .The second was acid treating meaned precipitating its solution in concentrated sulfuric acid into ice water. The product yield of the second method was 77.0％, which was higher than the method of alkali treating.

此外将合成的二氯酞菁硅采用两种方法转化为二羟基酞菁硅，第一种方法是碱处理法即将二氯酞菁硅在甲醇钠的乙醇溶液中回流得到，最高收率为53％第二种方法是酸处理法即采用二氯酞菁硅的硫酸溶液在冰水析出的方法转化为二羟基酞菁硅，其中酸溶析出法收率为77.0％。

A complete novel assumption is presented. Then, we prove the existence of two nontrivial solutions for a class of second order superlinear difference systems with the help of Minimax principle and Linking theorem in critical point theory,.6. Two applications in physics are given. Firstly, a coupled differential system coming from second harmonic waves is discussed.

利用Ricceri建立的三临界点定理，证明了一类含参数二阶差分方程在某些新的条件下至少存在三个解；随后，利用临界点理论中的极小极大原理和环绕定理，讨论了一类二阶超线性差分方程组多重解的存在性。

For the sake of making foreign students learn modal verb sooner and better, for the sake of increasing the efficiency of teaching Chinese as a second language and of furthermore mastering the Chinese, we analyze some common problems existed when foreign students are learning Chinese, sum up the patterns of error analysis and study the causes of forming the error, making several suggestions for teaching Chinese as a second language.This thesis is divided into seven chapters:Chapter one: Point out the motives and significance of selective subject, the scope of research and theory and method have been used in this thesis.

因此，为了使留学生更快更好地掌握汉语的能愿动词，为了提高对外汉语教学的效率，从而使留学生熟练地掌握汉语，我们从对外汉语教学的角度考察了外国留学生在学习汉语能愿动词时常常出现的一些问题，总结了偏误类型，探求了出现这些偏误的原因，进而提出了几点教学建议。

These modules are not interchangeable, be sure to replace the first check with a first check module and the second check with a second check module.

这些模块是不可互换的，请确保用第一止回阀模块更换第一止回阀，而用第二止回阀模块更换第二止回阀。

The experimental results of both setsof continua are similar: when compared with the monosyllable, the pho-neme boundaries between the second tone and the third tone of disyllableare shifted to the end of the second tone.

两组的实验结果一致：双音节第二和第三声的音位界线对比单音节的这一界线，都向第二声移动。

Now "The Moon Reflected in the Second Best Spring" already became one of "The Top ten Music of the World". More and more people from foreign countries than China have Wuxi and know the Second Best Spring under Heaven through this musical piece.

现在，"二泉映月"已经成为世界十大名曲之一，越来越多的国外友人正是因为这首曲子才知道中国无锡，了解天下第二泉。

The heavier bullet reduces muzzle velocity from 3,200 feet per second (975 m/s), to about 3,050 feet per second (930 m/s).

更重的弹头具有较少的初速，从早期型号的3，200码每秒（975米每秒）到A2的大概3050码每秒（930米每秒）。

Inverters 505 and 506 are coupled together in series between NAND gate 403 at VIN and a second input of multiplexer 510 to form a second delay path.

反相器505和506在NAND门403的VIN和乘法器510的第二输入端之间串联耦合到一起从而形成第二延迟路径。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。