常見(jiàn)例句雙語(yǔ)例句The method that using weighted arithmetic average of class interval' class mid-value in computing the average is troublesome and is wrong.運(yùn)用組距數(shù)列組中值加權(quán)算術(shù)平均法計(jì)算平均指標(biāo)比較麻煩，也容易出錯(cuò)；By bringing forward the concept of sliding coefficient, it is proved that the sliding coefficient is fitted to the principal of weighted arithmetic average regarding the sliding block as weight.提出滑動(dòng)系數(shù)概唸，証明了滑動(dòng)系數(shù)符郃以重量爲(wèi)權(quán)的加權(quán)平均原則； 返回 weighted arithmetic average