均勻極光帶 的英文怎麼說
中文拼音 [jūnyúnjíguāngdài]
均勻極光帶
英文
homogeneous band- 均 : Ⅰ形容詞(均勻) equal; even Ⅱ副詞(都; 全) without exception; all
- 勻 : Ⅰ形容詞(均勻) even Ⅱ動詞1. (使均勻) even up; divide evenly 2. (分出一部分) spare
- 極 : i 名詞1 (頂點; 盡頭) the utmost point; extreme 2 (地球的南北兩端; 磁體的兩端; 電源或電器上電流...
- 光 : Ⅰ名詞1 (照耀在物體上、使人能看見物體的一種物質) light; ray 2 (景物) scenery 3 (光彩; 榮譽) ...
- 極光 : [地球物理] aurora; aurora polaris ; [天文學] polar light
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Abstract : we have studied theoretically a beat effect in a four - level system due to fifth - order optical polarization, and considered the cases that the pump beams have either narrowband or broadband linewidth. we have found that the accuracy for the energy - level splitting measurement is determined by the homogeneous linewidths of the optical transitions. that is to say, this technique can achieve doppler - free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state
文摘:研究了四能級系統中基於五階極化的拍頻效應,考慮了抽運光束為窄帶線寬或寬帶線寬的情形.發現其對能級分裂的測量精度決定於光學躍遷的均勻增寬.也就是說,這種技術在測量與基態是偶極禁戒躍遷的兩激發態之間的能級分裂時,可得到消除多普勒增寬的精度2. african walnut tigerwood, origin of africa. wooden features : wood with a black stripe, shiny strong ; no special smell, texture staggered, structure and detailed and uniform, beautiful plane
木材特徵:木材帶有黑色條紋,光澤強無特殊氣味和滋味,紋理交錯,結構細而均勻,表面極為漂亮。
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