在原理上用一条基线就能满足计算的要求.A single base might in principle suffice for computation.这个数字并不适用于一切基线尺.Such figures are not applicable to all wires.剪力图按指明的方式来画, 负剪力画在基线以下.Shear force diagrams are drawn in the manner indicated, with ...

“基线”的英语可以翻译为：ase line，[计] baseline ...