The boys were as good as gold on our walk.我们散步的时候，这帮小男孩表现得很乖。In a day or so he will be as good as new.他大概一天工夫就会恢复过来。They were as good as their word and stayed away.他们信守诺言，离得远远的。...
For a system, Hamiltonian is invariant under any translation of spatial coordinates.对于一体系, 哈密算符在任何空间坐标变换下是不变的.A multi - distorted invariant orthogonal moments, Jacobi - Fourier moments ( JFM ), were proposed.提出一种多畸变不变的正交...
The obverse of rising unemployment is continued gains in productivity.失业率上升，相对应的是生产率进一步提高。The result has been a giant leap in productivity.其结果是生产力的大幅提高。Wages were rising faster than productivity and this was eating into ...