氦氣測量 的英文怎麼說
中文拼音 [hàiqìcèliáng]
氦氣測量
英文
helium survey- 氦 : 名 [化學] helium (2號元素, 符號 he)
- 氣 : Ⅰ名詞1 (氣體) gas 2 (空氣) air 3 (氣息) breath 4 (自然界冷熱陰晴等現象) weather 5 (氣味...
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 測量 : measure; survey; gauge; meter; measurement; measuring; surveying; mensuration; metering; gauging;...
-
( 5 ) the intensity and s / b of libs are investigated in detail at the different buffer gas, gas pressure, and laser power. the results show that under the 120 mj laser energy, for ar the best s / b is at 200 torr pressure, but for air at 100 torr and he at 300 torr. duration of atomic spectra in ar is longer than that in air
( 5 )實驗測定了不同的緩沖氣體和氣壓以及不同的入射激光脈沖能量對原子譜線強度和背景光的影響,結果顯示在氬氣環境下,當氣壓約為200torr 、激光的能量約為120mj時, libs的s b最大;在空氣和氦氣中獲得最佳s b時的氣壓約分別為100torr和300torr ;原子譜線在氮氣環境中持續的時間要比在空氣中持續的時間長。Standard test method for measuring package and seal integrity using helium as the tracer gas
使用氦作為示蹤氣體測量包裝和密封完整性的標準試驗方法This is sometimes called " retrodiction. " for example, the big bang theory makes very precise predictions about the primordial abundances of hydrogen, helium, and deuterium
這有時被稱為「追溯」 。例如,大爆炸理論對原始時期氫氣,氦氣和氘的大量存在做出了非常精確的預測。The big bang model, which states that almost 14 billion years ago the universe started expanding from a state of extremely high density and temperature, is able to explain galaxy motions, the abundance of hydrogen and helium, and the properties of the cosmic microwave background ( cmb ), the remnant heat from the expanding and cooling gas
大霹靂模型指出,宇宙于約140億年前自極度高溫、高密度的狀態開始擴張,這理論不但可以解釋星系運動以及宇宙中氫與氦的含量,而且還預測了宇宙擴張時,冷卻中氣體的殘餘熱輻射,也就是宇宙微波背景的各項性質。分享友人