例句與用法

1. We analyze the generation of external cavity frequency - doubling with knbo3 crystal theoretically . in order to get the second - order nonlinear conversion from 858nm to 429nm with knbo3 , we use non - critical type - i phase - matching to avoid the walk - off effect the corresponding optimum focusing condition is as followings : double refraction parameter b = 0 , focus parameter = 2 . 84 , optimum phase mismatch parameter = 0 . 574 . based on the theoretical analysis and numerical calculations , we obtain the ideal nonlinear conversion coefficient about 1 . 45 % / w with crystal length of 7mm and 2 . 07 % / w with crystal length of 10mm at the phase - matching temperature around 23 . 50c
   根據(jù)對其倍頻原理及性能的分析討論，在用該晶體完成波長從858nm到429nm的二階非線性轉(zhuǎn)換時，采用非臨界相位匹配條件(此時無離散效應(yīng)，對應(yīng)的雙折射參數(shù)b = 0 ，共焦長度為= 2 . 84 ，最佳相位失配因子為= 0 . 574 ) ，在相位匹配溫度約為23 . 5時，理論上通過計算得到理想情況下非線性轉(zhuǎn)換系數(shù)約為1 . 45 / w (長度為7mm ) ， 2 . 07 / w (長度為10mm ) 。
2. Not a hint , however , did she drop about sending me to school : still i felt an instinctive certainty that she would not long endure me under the same roof w with my doll on my knee till the fire got low , glancing round occasionally to make sure that nothing worse than myself haunted the shadowy room ; and when the embers sank to a dull red , i undressed hastily , tugging at knots and strings as i best might , and sought shelter from cold and darkness in my crib
   自我生病以來，她已把我同她的孩子截然分開，指定我獨(dú)自睡一個小房間，罰我單獨(dú)用餐，整天呆在保育室里，而我的表兄妹們卻經(jīng)常在客廳玩耍。她沒有絲毫暗示要送我上學(xué)，但我有一種很有把握的直覺，她不會長期容忍我與她同在一個屋檐下生活。因為她把目光投向我時，眼神里越來越表露出一種無法擺脫根深蒂固的厭惡。