设计计算公式
designing calculation formulae
短路电流的实用计算法
The Practical Calculating Method of Short Current
工程实用计算
practical calculation works
实用计算法
Practical calculation method
实用计算方法
Utility computed methods
practicalformula
practical calculating method
Practical computational method
Practical calculation method
fire resistance formula
Calculating methods
utility computational method
a practicle approach
Practical method
斜桩实用公式
applied formulas of raking pile
转矩实用公式
Practical torque formulation
计算公式选用
calculation formula selection
农田排水管(沟)作用的计算公式
calculating formula for function of drain pipe
通用水力计算公式
universal hydraulic calculation equation