几何相似
参考答案:
指原型流动与模型流动的空间及边界对应的几何尺寸称比例。
his European tour with a speech in Bruges, Belgium, President Xi says China and the EU can become twin engines of growth.
A.To end
B.Ended
C.To be ended
D.Ending
DL/T578-2008《水电厂计算机监控系统基本技术条件》规定:电量模拟点采集周期≤()s。
A.1;
B.2;
C.3。