fth 中文意思是什麼
fth
解釋
北京峰通宏-
Field balancing equipment. description and evoluation. fth : laboratory methods in anechoic and semi - anechoic rooms
現場配平設備.說明和評價.在消聲室和半消聲室里進行評價的實驗室方法 -
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
在這個基礎上，提出了一個研究脈沖破壞閉值的模型，對三種不同包絡脈沖的分析表明，在相同的脈寬、波長和入射光強下，高斯脈沖的破壞閉值較高，雙曲正割和洛侖茲脈沖的破壞閩值相對較低，即高斯脈沖最不容易對介質造成破壞。 -
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
同時我們發現隨著脈沖寬度變窄，包絡對破壞閉值的影響將越來越小，這表明對于飛秒脈沖，破壞闌值主要是由介質的內在特性決定的，而與其他外部因素關系甚小，這一結論與近年來飛秒激光破壞實驗的結果是一致的。 -
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，中國先後與上海合作組織（ sco ）的成員國進行了兩次反恐怖演習，上海合作組織第五屆周年紀念日將於六月在上海召開
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