磷尽管发挥的作用较小但也有类似功效，都是为了保护发电机的阀动装置。
The phosphorus plays a similar, though lesser, role in protecting the engine’s valve gear.
为研究新型板桩潜坝导流功效与局部冲刷问题，进行了针对性的动床模型设计。
A movable bed model test was carried out to study the flow diversion efficiency and local scour of a new-type submerged spur of sheet piles.
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