This article bases on insufficient ability of boiler feed water and constant shaft broken problems.

本文针对锅炉给水泵运行中存在能力不足、经常发生断轴的问题进行研究。

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It is a world difficult problem that the protein feed is insufficient, so developing compound protein feeds is one of the effective ways to solving this problem.

蛋白质饲料不足是世界性难题，研制复合蛋白饲料是解决这一问题的有效途径之一。

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Causes include heating too quickly in the feed zone, melting too slowly in the transition zone, insufficient mixing, and excessive heat loss in the adapters or die.

其原因包括在喂料区加热时间太短和在过渡区熔融太慢、混合不良、在机筒和口模中存在过多的热量损失。

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