选择性

Now if the pedal is depressed after the note is struck, there will be sympathetic vibration in octave and harmonic strings, but all the other strings will be almost totally quiet because the standing waves contain only pure harmonics.

钢琴不只选择性的让常态模式留在钢琴中，还会选择性的发出常态模式的音响。如果在弹下一个音之后再踩下延音踏板，此时就只有八度音及一些和弦音的弦会受到影响而震动，其它的弦几乎都不会受到影响而保持静止状态。

The results showed that, the adsorption selectivity of thiophene on CeY was better and on NaY was poorer.

CeY对噻吩具有较好的吸附选择性，而NaY的吸附选择性不好。

In order to understand oviposition strategy of the uniparental endoparasitoid Meteorus pulchricornis on host larvae of the beet armyworm Spodoptera exigua, non-choice and paired choice experiments were conducted in the laboratory.

在室内采用非选择性和选择性试验，研究了斑痣悬茧蜂对不同龄期甜菜夜蛾幼虫的选择以及后代的生长发育表现。

But, in fact ,there are selective and unselective ways to implement the safeguards.

但在贸易实践中，保障措施的实施往往存在选择性和非选择性两种方式。

This discourse starts with the WTO safeguard clauses , analyses the safeguards cases in the international trade, studies the source, reality, validity of the selective and unselective implementations and states the view of its development.

本文从分析WTO保障措施的具体条款入手，结合国际贸易中保障措施的实际案例，深入研究了WTO保障措施实施方式的选择性和非选择性，在其存在的根源、现实性、合法性及这两种实施方式的今后的发展方向等方面提出了见解。

The test results indicate that the zincate catalyst systems can accelerate these reactions high-effectively, so its selectivity is up to 100% and TOF is 5472h -1, and the activity and the selectivity of the catalyst are kept in six times, and the catalyst system can be availab.

研究了离子液体助催化的各种无机盐催化剂体系用于二氧化碳和环氧化合物通过环加成反应制备环状碳酸酯，结果表明锌盐催化剂体系能够非常高效地催化该反应，最高得到了 5 472h- 1的催化转化频率和 10 0 %的选择性，催化剂使用六次以后没有发现催化活性和选择性的下降，并且该催化剂体系能够适用于各种结构的环氧化合物。

To engage in harsh, accusatory, threatening criticism.

在抗辩中作选择性的或美国的选择性抗辩的。

From the results of IR and XPS spectrocopy. The cationic sol components H〓SiO〓 and 〓 of the solution trend to adsorp on the surface of electronegative aegirine because of electrostatic acctraction each other, and interrupted the collector's reaction with Fe〓 on the surface. Hence the flotation of aegirine was decreased, on the other hand, there is electrostatic repulsion between the surface of hematite and the cationic sol H〓SiO〓.〓, Which has advantage to dispersion of hematite particles, therefore, the hematite flotation is achieved sucessfully with anionic collector.

根据红外光谱和XPS测试结果可知，在弱酸性介质中，活性硅酸胶体抑制剂中荷正电的胶团H〓SiO〓及〓由于电性吸引而选择性地覆盖在荷负电的钠辉石表面，从而阻碍了阴离子捕收剂与表面Fe〓的配位作用，导致钠辉石的浮游被抑制；而赤铁矿表面由于荷正电，与矿浆中的H〓SiO〓、〓等硅酸胶团存在着电性排斥作用，有利于赤铁矿颗粒的稳定分散，所以赤铁矿能够被脂肪酸捕收剂吸附而选择性上浮。

It is the fluorosilicic ion that exsits in the slurry and plays an important role in flotation, fluorosilicic ion not only reacted with Fe〓 on the surface of aegirine to form ionic compound, but also formed stable Si-F bond in Si-O etching reaction. Only ionic compound was obtained when it was attached to hematite surface according to the theories of coordination chemistry, Compared with SiF〓, Fatty acid ion preferentially acts with Fe〓 on the minerals surface, therefore, SiF〓 Can't obstruct the adsorption of collector on the surface of hematite completly, but can reduce the flotation recovery of aegirine selectively.

运用FTIR、XPS等测试方法仔细研究了氟硅酸盐抑制剂对含铁硅酸盐钠辉石的选择性抑制作用机理，氟硅酸盐在弱酸性条件下对赤铁矿浮选的抑制作用很微弱，而对含铁硅酸盐钠辉石强烈抑制，从而扩大了两者之间的浮选差异；SiF〓是矿浆中起抑制作用的主要成分，SiF〓不仅与钠辉石表面的Fe〓形成离子型配合物，而且还与Si-O键形成稳定的Si-F共价键，而与赤铁矿表面只能形成离子型配合物，根据晶体配位场理论，与SiF〓相比较羧酸根离子将优先与矿物表面Fe〓发生配位作用，因此SiF〓的存在并不能完全阻碍捕收剂在赤铁矿表面的吸附作用，却能够选择性地抑制钠辉石的上浮。

In seedling of wheat, implementing the test of Nonpreference by means of releasing alate aphids in order to make them freely select location, the results indicate that most of the wheat varieties have not distinct difference each other, except that Hongmanghong and 885479-2 have distinct difference with others.

在小麦苗期，通过在网罩内人工释放有翅成蚜让其自由选择寄主进行不选择性试验，结果显示，在测定的15个不同抗性材料中仅红芒红和885479-2两个品种表现出与其它品种有较大差异，而大多数小麦品种之间的不选择性没有显著差异。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。