The head distribution is different in the two layers.

两层中的水头分布不同。

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The main products are ve pump pump head distribution, injector, plunger, Valve and so on.

主要产品有VE分配泵泵头，喷油嘴，柱塞，出油阀等。

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Several basic characteristics on pressure head distribution at the surface of spur dike are described.

论述了坝体周围动水压力分布的若干基本材性。

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