该系列点焊机采用气缸加压，头和底分开在两头焊接，骨架不需要调头，踩一下脚踏开关就完成一次焊接。
Cylinder pressure is used in welding process to weld the head and foot separately on both sides, without any need for u-turn.
密封垫也同样用于密封其它部件之间的接合处，例如，油底壳、歧管、水泵与气缸体之间的密封。
Gaskets are also used to seal joints between other parts, such as between the oil pan, manifolds, or water pump and the Block.
缸体的顶部是气缸盖，它组成了燃烧室，缸体底部是油底壳。
The bottom of the block is covered with an oil pan or oil sump.
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