例句與造句

1. the initial or frozen-in double refraction is replaced by an equivalent or virtual state of stress .
   初雙折射或被凍結(jié)的雙折射，可用一個(gè)等效或有效應(yīng)力狀態(tài)來(lái)代替。
2. having one direction along which double refraction of light does not take place . used of a crystal
   單軸晶體的有一個(gè)方向的，沿此方向不發(fā)生光的雙折射。用于晶體
3. 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(duì)其倍頻原理及性能的分析討論，在用該晶體完成波長(zhǎng)從858nm到429nm的二階非線性轉(zhuǎn)換時(shí)，采用非臨界相位匹配條件(此時(shí)無(wú)離散效應(yīng)，對(duì)應(yīng)的雙折射參數(shù)b=0，共焦長(zhǎng)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(shí)，理論上通過(guò)計(jì)算得到理想情況下非線性轉(zhuǎn)換系數(shù)約為1.45/w(長(zhǎng)度為7mm)，2.07/w(長(zhǎng)度為10mm)。
4. It's difficult to find double refractions in a sentence. 用double refractions造句挺難的