例句與造句

1. then, four different computation methods are applied to compute the hydrodynamic performance of the rotor, which are single-disk single-tube method ( sdst ), double-disk single-tube method ( ddst ), multi-tube method ( mtt ) that are based on momentum theorem and vortex method ( vtth ) that is based on potential eddy theory
   然后，采用基于動量定理的單盤面?單流管方法(sdst)、雙盤面?單流管(ddst)方法、多流管(mtt)方法以及基于勢渦理論的渦方法(vtth)計算直葉擺線式水輪機的水動力性能。
2. at first an analysis of the basic principles of the vertical-axis variable-pitch turbine is given including two methods to calculate the induced velocity . one is the three different streamtube-methods which are single-disk single-streamtube ( sdst ), double-disk single-streamtube ( ddst ) and multi-streamtube ( mtt ) method based on the momentum theory, the other is the vortex method ( vtth ) based on the potential eddy theory
   一是根據(jù)動量定理的流管模型得到的求解誘導速度的單盤面?單流管方法(sdst)、雙盤面?單流管(ddst)方法、多流管(mtt)方法；二是根據(jù)勢渦理論得到的求解誘導速度的的渦方法(vtth)。
3. It's difficult to find ddst in a sentence. 用ddst造句挺難的