对于起重机箱形梁的计算一般比较复杂，用人工计算不仅耗时比较长，而且很容易出现错误。

For the calculation of the crane box-style beam, which is generally very complicated, not only waste much time but also very easily make mistakes.

youdao

对于起重机箱形梁的计算一般比较复杂，用人工计算不仅耗时比较长，而且很容易出现错误。

For the calculation of the crane box-style beam, which is generally very complicated, not only waste much time but also very easily make mistakes.

youdao