回转机构由液压马达及蜗轮蜗杆减速器组成。
The slewing mechanism consists of hydraulic motor and worm speed reducer.
目前，在环面蜗轮蜗杆减速器的设计、制造以及应用上，国内与国外先进水平相比仍有较大差距。
At present, the torus worm reducer for the design, manufacture and application of domestic and foreign advanced level there are still large gaps between the comparison.
调节器由齿轮和蜗轮蜗杆减速器组成；自动控制电路由脉冲周期鉴别、正向开关、反向开关及保护电路组成。
The adjustor consists of gears and worm-gear reducer, and the automatic controller circuit consists of pulse period discriminator, forward switch, backward switch and protector circuit.
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