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。
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。
The invasion and spreading of alien organism caused serious economic loss in China.
外来有害生物的入侵和扩散蔓延，给我国经济造成严重损失。
Medical malpractice insurance is an effective way of shifting loss and spreading risk.
医疗责任保险是转移损害、分散风险的有效方法之一。
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。
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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