例句與造句

1. Causes for generating fractures in mass concrete are analyzed . measures to prevent fracturing are introduced , which include selecting of material , formulation variables , construction techniques and so on
   摘要大體積混凝土表面容易出現(xiàn)裂縫，影響混凝土質(zhì)量。從材料選擇、配合比設(shè)計和施工工藝等方面闡述了大體積海工混凝土裂縫控制方法。
2. It's difficult to find formulation variables in a sentence. 用formulation variables造句挺難的