查询词典 necessary

Therefore, constant practice before doing a back flip on a ramp-type jump is necessary.

所以，在做这个动作之前，需要进行反复的后空翻练习。

In order to transfer successfully the useful traits from ryegrass to wheat, it is necessary that offspring was produced by continuous backcross.

为了使黑麦草的优良性状能最终转移到小麦中，需要用小麦不断地回交以获得回交后代。

Add one section in Article 44 as the second Section, stipulating: After Ministry of Commerce initiated the investigation, if the evidence proves that the two cases referred to in above two sections exists together, necessary registration measures on related imported products may be made so as to backdate to anti-dumping tax.

" 十一、在第四十四条中增加一款作为第二款，规定："商务部发起调查后，有充分证据证明前款所列两种情形并存的，可以对有关进口产品采取进口登记等必要措施，以便追溯征收反倾销税。

Tested approaches where background reflectance is described as a n-degree polynomial in wavelength, resulting in a second degree polynomial (n=2) for the O2-A band, while a higher degree polynomial (n=6) was necessary for the O2-B band, as tested over a large database of many possible combinations of r and F cases.

测试(2009)方法在背景反射被描述为一个n-degree 多项式的波长，导致了第二学位多项式(n = 2)，而O2-A乐队更高程度的多项式(n = 6)是必要的，O2-B乐队测试在大型数据库的吗许多可能的组合和F的病例。

More than 90% of the total incidence of typhoid and paratyphoid were typhoid previously, as the widely use of Vi bacterin, in the middle of 90s in 20th century, the popular strain changed, in some provinces the cases of typhoid decreased, but that of paratyphoid increased largely, with the outbreak trend from spot to part and from inshore provinces to backland provinces. In recent years, paratyphoid becomes the main infectious diease in some areas, and ofen develop to serious epidemic situation. So setting up a rapid and accurate detecting metod is necessary.

以前我国伤寒发病占伤寒副伤寒总发病的90%以上，后来由于伤寒Vi疫苗的广泛使用，20世纪90年代中期，流行菌株发生转变，我国部分省份伤寒病例逐渐下降，而由甲型副伤寒沙门氏菌引起的副伤寒病例却大幅上升，并呈现由散发到局部暴发，由沿海省份向内地省份推进的流行趋势，近几年来成为我国一些地区传染病突发事件的主要病种，常发展成重大疫情，急需建立快速、准确的诊断方法。

If it is necessary to look for one of the following characters, verbatim, in the message, put a backslash in front of it.

如果有必要在信件中去寻找下列字符中的一个，请逐字地在其之前放置一个反斜杠。

To take advantage of the text arrangement functionality in devices with a keyboard, the component provides the '''insertAscii''' method. When Canvas or GameCanvas is used, the keyPressed method provides the ascii code of the button pressed. For normal keypad phones this is the ascii of the number pressed, for qwerty devices it will be the value of the key pressed. The device changes automatically the character set if the shift or numbers key is pressed and so the ascii received is different and corresponds to the intended key. The backspace character is also received as an ascii code, so it is not necessary to call in explicit way the delete function.

要充分利用键盘在设备里的文字安排功能，这个部份提供'''insertAscii'''方法，当Canvas或GameCanvas使用时，keyPressed方法提供按钮按下的ascii码，对於正常键盘手机来说这是按下数字的ascii，对qwerty设备来说它会是按下键的值，假如shift或数值键被按下该设备会自动改变字元集，所以所收到的ascii是不同的并且对应於所要的键，倒退键字元也会以ascii码来收取，所以没有必要用明确的方式来呼叫删除的函式。

At other times,one may find it necessary to backtrack to a previous Step.

在另一些场合，可能有必要重复前一步骤。

At other times, one may find it necessary to backtrack to a precious step.

另一些场合，可能有必要重复前一步。

Huang and Lin proposed the weak solution concept for Backward Stochastic Differential Equation This paper based on the predecessor's work , gives the weak solution concept for Backward Stochastic Differential Equation with continuous martingale,uses the Girsanov transformation, obtains its weak solution of the existence of a necessary and sufficient conditions, and on this basis obtains its weak solution of the existence of sufficient conditions,these sufficient conditions weakened the drifting coefficient which requested in the existence uniqueness of strong solution to satisfy the Lipschitz condition the request.

本文在前人研究的基础上，给出由连续鞅驱动的倒向随机微分方程弱解的概念，利用Girsanov变换，得到其弱解存在的存在的一个充分必要条件，并在此基础上得到了其弱解存在的一些充分条件，这些充分条件减弱了在强解的存在唯一性中要求的漂移系数满足Lipschitz条件的要求。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。