fth meaning in English
北京峰通宏
Examples
- Field balancing equipment . description and evoluation . fth : laboratory methods in anechoic and semi - anechoic rooms
现场配平设备.说明和评价.在消声室和半消声室里进行评价的实验室方法 - In 2006 , china conducted two counterterrorism exercises with shanghai cooperation organization ( sco ) partners , and hosted the fi fth anniversary of the founding of the sco in shanghai in june
2006年,中国先后与上海合作组织( sco )的成员国进行了两次反恐怖演习,上海合作组织第五届周年纪念日将于六月在上海召开 - On this basis , a model of pulse damage threshold fth ( j / cm2 ) was proposed . calculations on pulses of three different envelope shapes indicate that , with the same pulse duration , wavelength and incident light intensity , fth of pulse with gaussian envelope is higher that that of the pulses with hyperbolic secant and lorentzian envelope , i . e . gaussian pulse would need a little higher intensity to induce breakdown than the other two
在这个基础上，提出了一个研究脉冲破坏闭值的模型，对三种不同包络脉冲的分析表明，在相同的脉宽、波长和入射光强下，高斯脉冲的破坏闭值较高，双曲正割和洛仑兹脉冲的破坏闽值相对较低，即高斯脉冲最不容易对介质造成破坏。 - It is realized that with the d ecrease of tp , the effect of envelope on fth will decrease too , which confirms the previously reported experimental results that fth is mainly determined by intrinsic properties of dielectrics , rather than some external factors
同时我们发现随着脉冲宽度变窄，包络对破坏闭值的影响将越来越小，这表明对于飞秒脉冲，破坏阑值主要是由介质的内在特性决定的，而与其他外部因素关系甚小，这一结论与近年来飞秒激光破坏实验的结果是一致的。