The whirling is one of the main reasons of decreasing the life and the useful effect of PDC bits.
PD C钻头的涡动是影响其使用寿命和效果的主要原因之一。
Secondly, I analyse the main medium of visual sign in graphic design and design the visual sign accoding to the specialty of medium , then analyse the useful effect in communication field.
现代平面设计中符号语言清晰，明了的以最有效的途径进行传播已经成为平面设计中至关重要的问题。
Likewise, by driving so many of its brightest and best abroad, Italy has created a precious resource of emigres with useful experience who could have a huge effect on national life if they returned.
同样的，随着众多最闪亮最优质的东西的出口，意大利拥有宝贵的移民资源，他们有很有用的经验，这使他们回国后能对本国生活产生巨大影响。
If vitamins are useful for anything, it's probably for tapping into our old friend the placebo effect.
如果维生素对任何预防病症都有益，那也很可能是因为人们长久以来的心理安慰作用。
Splatter is a pretty simple effect that can be useful for the majority of t-shirt design concepts.
喷溅的效果非常简单，却能够广泛用在T恤设计概念之上。
As a useful side-effect, it also provides us with unit testing and documentation of our code.
作为一个有用的副作用，它还能为我们带来代码的单元测试和说明文档。
This can be useful while debugging or setting up a system, but can have a significant effect on performance.
这样做可能对调试或设置系统非常有用，但也可能对性能产生巨大影响。
This can be useful when going downhill, where the effect is similar to engine braking.
这种模式在下坡时更有用，这时的效果与引擎制动相似。
Firstly, I did say that WM had certain theory and demonstration basis to treat the disease, so single medicine was useful and had immediate effect after taking.
首先，我确实在那里说过，西医治病有一定的理论和实证基础，所以认为某一味药有效，而且服后很快见效。
Carbon dioxide, once released, stays in the atmosphere and continues to have a warming effect for about a century, and industrial infrastructure is built to have a useful life of several decades.
二氧化碳一旦被释放出来，就会留在大气层中，在一个世纪左右都会持续产生温室效应，但工业设施的使用寿命才有几十年。
Attending a conference also has a useful side effect (and one which can be parlayed into bigger and better things if actively massaged) : That of building up the attendee's developer peer group.
参加研讨会也会产生一种有用的副作用(如果积极管理，可以为研讨会锦上添花)：与会者可以建立开发人员小组。
Eran Eldar, of University College London said: 'This effect of mood should be useful whenever different sources of reward are interconnected or possess an underlying momentum.
英国伦敦大学学院伊然·艾尔达说：“当不同回报的来源相互间都有联系或拥有潜在动力，这种情绪效应将会很有用。”
The stage of the traditional family education has its positive effect. It is very useful for today' s family education to analyze its advantages and disadvantages.
传统的家庭教育有其积极的一面，也有其消极的影响，分析其利弊得失，对于今天的家庭教育或许会有一些启迪。
Therefore, GBRS have a useful selective effect with respect to the frequency and propagation direction of relic HFGWs.
因此，高斯束谐振系统对高频遗迹引力波的频率和传播方向具有良好的选择效应。
I know it will prove useful, as I feel that these dragons will have a much greater effect on our world as time goes on.
我认为它将会非常有用，因为我感觉到随着时间的流逝，这些龙将会对我们的世界产生非常重要的影响。
Some mothers find a bath in early labor useful for its calming effect and to determine if labor has actually started.
有些妈妈发现待产早期时洗澡有镇静效果，并确定分娩是否真的发动了。
Considering the effect of the shadow fading and fast fading on the receive signal, the received useful signal and interference signal should be random variables which change continuously.
考虑到阴影衰落和快衰落对于接收信号的影响，接收到的有用信号和干扰信号是随机变量，相应的载干比也是随机的。
The propagation effect of VLF wave could become a useful tool of detecting the intensity variation of cosmic rays.
所以，VLF波的传播效应可能成为间接探测宇宙线强度变化的有用工具。
To be distinguished for elegance and accomplishments, the authorised object of their youth, could have had no useful influence that way, no moral effect on the mind.
在文雅和才华方面出众，这是她们年轻时的既定目标，但是这对她们并不能起到这样的有益影响，对她们的思想产生不了道德教育的效果。
A sea ice numerical simulation is useful for forecasting the status and variation of sea ice distribution and its effect on the global climate system with the development of numerical simulation.
随着模拟水平的不断提高，近年来海冰温度场的数值模拟正在用于对北极海冰场的预报以及全球气候变化的研究。
Conclusions HR and HRV were useful indicators and could be used in cervical stimulation to evaluate the effect on autonomic nervous system.
结论心率和心率变异性是一项评定颈部手法刺激对自主神经系统效应的有用指标。
The pencil one may seem far-fetched, but I find the basis of it (the Benjamin Franklin effect) is very useful and extends far beyond pencil borrowing.
铅笔似乎对你来说有些遥远，但是我发现它（本杰明·富兰克林效应）的基础是非常有用的，远远超过借铅笔。
It is even thought that ethylene glycol can have a structure-stabilizing effect and may be useful in the crystallization of flexible proteins.
一般还认为乙二醇有稳定蛋白结构的作用，构象不稳定的蛋白可以尝试添加乙二醇来长晶体。
Conclusion: The PCEA is useful in relieving labor pain and accelerating labor course without any side effect on fetus and lying-in women and should be extended in clinic.
结论：PCEA分娩镇痛效果可靠，可明显减轻分娩疼痛、加速产程进展，且对胎儿及产妇无不良影响，值得临床推广应用。
This method is useful for students to improve Serving technology and psychological quality simultaneously and promote the teaching effect of Serving technology.
用该教学法还有利于学生对发球技术和心理素质的同步提高，对提高发球技术教学效果具有促进作用。
The Rayleigh wave technique is useful and its effect is satisfactory as proved by the tests using RAMAC/GPR in Chang Ba Lead Zinc Mine.
最后作者采用瑞典RAMAC/GPR便携式雷达，对探测的空区进行了检验。 实践证明，瑞雷波探测方法取得了较好的效果。
Though the studying and practice, a new useful examination mode is coming into being, and favorable practice effect has been attained.
在不断的学习和实践当中，该课程逐渐形成了一套行之有效的考试模式，并取得了较好的实践效果。
The experiment shows that this method is useful for students to improve shooting and psychological quality simultaneously and promote the teaching effect of shooting at a sudden halt and jump up.
实验证明，用该方法教学有利于学生投篮技术和心理素质的同步提高，对提高急停跳起投篮技术教学效果有促进作用。
The experiment shows that this method is useful for students to improve shooting and psychological quality simultaneously and promote the teaching effect of shooting at a sudden halt and jump up.
实验证明，用该方法教学有利于学生投篮技术和心理素质的同步提高，对提高急停跳起投篮技术教学效果有促进作用。
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