A calculation method for geometrical spreading loss is provided which is adapted to the characteristics of running trains noise.
给出适合铁路列车运行噪声特点的几何发散损失计算方法。
It recommends that the calculation of geometrical spreading loss of running trains noise adopt the theories calculation formula or the simplified formula of directional characteristic of dipole.
推荐铁路列车运行噪声几何发散损失计算采用偶极子指向性特性的理论计算公式或简化公式。
Based on the theory of acoustics, this paper analyzes the character of geometrical spreading loss of finite line sound source on three types of directivity-monopole, intermediate pole and dipole.
根据基本声学理论，分析具有单极子、中间和偶极子三种指向性的有限长线声源的几何发散损失特性。
Once infringement happens, because of rapidness of spreading news, obligee will suffer irretrievable loss.
由于新闻传播的快捷性，一旦发生侵权，将会给权利人造成难以弥补的损害。
For some people, vitiligo spreads slowly, over many years. For other people, spreading occurs rapidly. additional depigmentation (loss of color) can follow periods of physical or emotional stress.
对一些人来说，白癜风传播速度缓慢，许多年。对于其他人，发生迅速蔓延。额外脱色(颜色的损失)可以按照身体或情绪紧张时期。
The loss of energy from a wavefront as a consequence of geometrical spreading, observable as a decrease in wave amplitude.
由于球面波的几何扩展产生的波前能量的损失，这种扩散作用可从波的振幅降低方面观测到。
Safe and stable function, : heat spreading system, continuous mining without cutting quality or loss of machine.
性能安全稳定，有散热系统，可长时间连续工作，而不会影响开采效率和机器质量。
The spreading of cable groove fire makes the poisonous smog of high temperature collect and it can cause great economic and human loss.
电缆沟火灾蔓延迅速，高温有毒烟雾积聚，火灾扑救难度大，一旦发生火灾将造成严重的经济损失和人员伤亡。
What is even more exciting is that the spread of the virus spreading at the same time show a certain rate of decrease, and the loss of ITK feature does not affect the normal T-cell survival.
更令人兴奋的是，病毒的传播蔓延同时呈现一定幅度减小，且损失itk功能后并不影响T细胞的正常存活。
With the tax-losing spreading in the world, the loss of revenue management has become a worldwide problem, and all sectors of the community concern with it.
随着税收流失在全球的泛滥与猖撅，税收流失的治理已成为世界性难题，并为社会各界所广泛关注。
Yao and McGrady combined for 69 points Saturday in a 107-99 loss at Sacramento before spreading out the offense against the Grizzlies.
与对阵灰熊时进攻的多点开花不同，姚麦在上周六联手得到69分，球队却最终于107-99输给了国王队。
The euro was set for a weekly loss against most of the currencies as Fitch Ratings downgraded Ireland on concerns of the debt crisis spreading to other European nations.
因担忧债务危机会满意至其他欧洲国家，惠誉国际评级下调爱尔兰的级别，导致欧元兑其他大多数货币连续第五个交易日下滑。
The euro was set for a weekly loss against most of the currencies as Fitch Ratings downgraded Ireland on concerns of the debt crisis spreading to other European nations.
因担忧债务危机会满意至其他欧洲国家，惠誉国际评级下调爱尔兰的级别，导致欧元兑其他大多数货币连续第五个交易日下滑。
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