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来源:雅诚德英语网
The mechanics calculation of parabolic space rigid frame isv ery complicated, without being dealt with in issued directories, documents and textbooks.
抛物线形空间刚架的力学计算十分复杂 ,在已有的手册、资料、教材中均未叙及。
The mechanics calculation of parabolic space rigid frame isv ery complicated, without being dealt with in issued directories, documents and textbooks.
抛物线形空间刚架的力学计算十分复杂 ,在已有的手册、资料、教材中均未叙及。