The experimental results show that knock is caused by end gas autoignition.
自燃通常会，但并不总是引起爆震。
Maybe we should offer free gas for a year to people who buy a car before the end of the month.
也许我们应该向在本月底前买车的顾客提供免费加油一整年的优惠。
The collection and reuse of landfill gas put an end to the risk of explosion.
填埋可燃气体收集再利用，杜绝了爆炸危险。
One end of the gas supply pipeline is connected with the gas supply system;
送气管线的一头与供气系统连接；
One end of the gas supply pipeline is connected with the gas supply system;
送气管线的一头与供气系统连接；
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