Oil is cracked by heating under pressure.
石油在一定力下加热分解。
Oil is cracked by heating under pressure.
石油在一定力下加热分解。
Wood blocks may compress a great deal under pressure.
木块时可缩小很多。
Propylene,the common petroleum gas,is subject to gasification under heating and liquification under pressure.
丙烯是一种热气化、液化的常石油气。
He’s only seventeen, but he has an old head on young shoulders and remains calm under pressure.
他有七岁,不过却少年老成,面对力沉着冷静。
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