常見(jiàn)例句Methods To detect fluoride level in the 5 handpump water samples of each natural village by screening. 方法以自然村爲(wèi)單位開(kāi)展篩查,採(cǎi)集5份手壓井水樣做氟化物含量測(cè)定。deicing handpump 防冰液手搖泵 返回 handpump