gas void fraction的用法和樣例：
例句
- However, due to the low temperature in winter, the rate of gas production in the marsh gas tank becomes lower, even the marsh gas tanks are frosted.
但我國北方冬季氣溫低，導致沼氣池產(chǎn)氣率低，甚至出現凍裂池體等現象。 - Distribution of reaction zones affects the heating value of producer gas and the rate of gas generation, as well as tar content and particulates.
氣化爐內之反應區分布狀況不但會(huì )對產(chǎn)氣熱值與產(chǎn)氣率產(chǎn)生影響，同時(shí)也會(huì )影響焦油與粒子之生成量。
