Bleeding from erosive gastritis was rarely life - threatening.腐蚀性胃炎的出血罕有危及生命的.Investigated charring erosive characters of internal insulation of solid rocket motor under flight acceleration.研究了固体火箭发动机内绝热层在飞行加速度条件下的炭化烧蚀特性...
Bleeding from erosive gastritis was rarely life - threatening.腐蚀性胃炎的出血罕有危及生命的.Erosive action is achieved at each contraction where a pair of opposing vanes are installed.在每个收缩区段中相对地设置一对叶片,都起到了冲洗作用.In this geometry the er...
因此,必须选择适当的馏分油,用调合法使它满足市场的要求.And optimum selection of crude types to meet market requirements by blending is necessary.C5馏分油主要来源于石油烃高温裂解制乙烯过程的副产品,随着乙烯工业的发展,乙烯废弃的C5馏分量逐年增大.另一方面,民用燃料需要量颇为可观.C 5 distillate of ethylene access...
We remove these rear controls and install them as canard controls.我们把尾部控制改为鸭式控制.This canard was started by William Herndon.这一谣言最初出自威廉·赫恩登之口.The charge that Harding was a political stooge may be a canard.关于哈丁是个政治走狗的指控可能是个...