coefficient of radiation中文什么意思

下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯

The theoretical analysis of large cryocondensation pump for nbi was mainly concerned . this paper emphasized on analyzing and calculating the heat load of cryocondensation pump , simulating thermal transmission coefficient and molecule transmission coefficient of radiation baffle according to monte carlo method , analyzing the process on cryo - surface and the factor of affecting pumping speed and hydrogen layer thickness of influencing cryo - parameter , etc . finally by verifying the pumping speed on large cryocondensation pump for neutral beam injection system , the pumping speed of 4 . 0x105l / s ( for h2 ) was proven to be reasonable
本文首先介紹了中性束注入系統(tǒng)的國(guó)內(nèi)外發(fā)展?fàn)顩r，闡述了中科院等離子體所ht - 7中性束注入系統(tǒng)的構(gòu)成，主要對(duì)用于中性束注入系統(tǒng)的大型低溫冷凝泵的特性進(jìn)行了理論分析；對(duì)冷凝抽氣面的熱負(fù)載進(jìn)行了分析計(jì)算；用蒙特卡羅法對(duì)輻射擋板的分子傳輸幾率與熱傳輸幾率進(jìn)行了模擬計(jì)算；研究了低溫表面的處理方法對(duì)抽速的影響以及氫層厚度對(duì)各低溫參數(shù)的影響；最后對(duì)用于中性束注入系統(tǒng)的大型低溫冷凝泵的抽速進(jìn)行了驗(yàn)證，得出的結(jié)論是：選取40萬升秒的抽速是合理的。

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