例句與造句

1. Abstract : the maximum tube distribution numbers in tube sheet limited circle for fixed tube sheet heatexchanger have been determinded by used of the superposition method with computer based on c language programming . it is characterized by determination the maximum tube distribution number according to the even number or singular number of center tube distribution . the method is simply and quickly , and can be used for the design and process calculation of heatexchangers
   文摘:采用迭加的方法，使用c語言編程在微機上實現(xiàn)管板布管限定圓最大布管數(shù)的確定.該方法可根據(jù)中心布管數(shù)是奇排列還是偶排列來確定最大布管數(shù)，簡便易行，計算速度快，對換熱器的設計及工藝計算具有實用價值
2. It's difficult to find fixed tube sheets in a sentence. 用fixed tube sheets造句挺難的