例句與造句

1. Those that preserve orientation are called "'proper "', and as linear transformations they have determinant + 1 . ( The improper Lorentz transformations have determinant  " 1 . ) The subgroup of proper Lorentz transformations is denoted SO ( 1, 3 ).
2. It's difficult to find improper lorentz transformation in a sentence. 用improper lorentz transformation造句挺難的