例句與造句

1. We form a ly a line sample from spectra of 19 qsos in the literature . in this analysis , we demonstrate that a proximity effect is present in the data ; i . e . , there exists a significant deficit of lines at zabs = zem , within 4h - 1 mpc of the qso emission redshift . and the deficit depends on the rest equivalent width of the lines , with weak lines showing a relatively weaker effect
   我們發(fā)現(xiàn)所選樣本中確實(shí)存在接近效應(yīng)，特別在z _ ( abs ) z _ ( em )附近距類星體4h ~ ( - 1 ) mpc范圍內(nèi)， ly森林的線數(shù)相對(duì)演化規(guī)律估計(jì)得到的線數(shù)缺少很顯著，并且與譜線的靜止等值寬度有關(guān)，弱線的接近效應(yīng)較弱。
2. It's difficult to find width of the lining in a sentence. 用width of the lining造句挺難的