例句與造句

1. ( 2000 ) . the neutron irradiation is assumed to derive primarily by the reaction 13c ( a , n ) i60 with a minor contribution from the marginal burning of 22ne through the channel 22ne ( a n ) 23mg in the final , high temprature phase of each flash . and we considered the influence of the various parameters such as the initial core mass , the envelope mass , the mass - loss rate , the overlap factor and the delution factor etc . , and we vary their value with the pulse number
   本文采用分叉s -過(guò)程反應(yīng)通道，以~ ( 13 ) c ( , n ) ~ ( 16 ) o 、 ~ ( 22 ) ne ( , n ) ~ ( 25 ) mg為雙脈沖中子源，用最新的中子俘獲截面，利用gallino和busso等人給出的agb星三殼層核合成模型，考慮到核心質(zhì)量、挖掘程度、重疊因子、稀釋因子及星風(fēng)質(zhì)量損失率隨脈沖數(shù)的變化，詳細(xì)計(jì)算和研究了各個(gè)金屬豐度情況下的3m 。
2. It's difficult to find initial core in a sentence. 用initial core造句挺難的