常見例句雙語例句The methods based on the old statistics and firedamp content have been used to predict the gas emission in China, yet it was unsuitable and inaccurate in some special conditions.長期以來，我國一直沿用傳統(tǒng)的鑛山統(tǒng)計法和瓦斯含量法來預測鑛井瓦斯湧出量，這兩種預測方法都有各自的適用條件和侷限性。 返回 firedamp content