This is the birth of the cylinder musical box.
这就是滚筒音乐盒的诞生。
D. Gear box: 200 Involute cylinder Bevel wheel, cast alloy steel piston.
齿轮箱:200渐开线圆柱斜齿轮,铸造合金钢活塞。
It is composed of open type engine body, hydraulic power cylinder, upper pressure head, and lower type box. The type box can be collocated with manual four-positions renewal.
有开式机身、液压动力缸、上压头、下字盒等组成。下字盒可配手动四位根据用户要求更换。
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