approximate calculation的用法和樣例：
例句
- At last, the approximate calculation methods of pore water pressure and flowing pressure are presented.
給出土坡穩定性分析中對孔隙水壓力和動水壓力的近似計算方法。 - The capacitor with adjustable inductance is analyzed here,and the approximate calculating formula is proposed.
主要討論了電感可調的電容器，及其電感的近似計算公式。
