The greater the mass of such a star, the more quickly it will use its hydrogen fuel and the shorter it stays on the main sequence.
恒星的质量越大，它消耗氢燃料的速度也就越快，它在主序中停留的时间也就越短。
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They calculated that they could be almost twice as common as "main-sequence stars" - such as our own Sun - which are still burning through their hydrogen fuel stock.
But in the case of the diesel engine the supply is effected by an injection or jerk pump which forces a shot of fuel into each cylinder in turn ac cording to the correct firing sequence.