Mainly use worm wheel, six worm axes drive, steel seat, high compression resistance, fetch up the former product pressure is not enough.
主要采用蜗轮、蜗杆式六轴传动的方式，全钢机座，耐压力强，弥补了旧产品压力不足的缺点。
The earth pressure on the circular retaining structure is reduced by the soil arching effect, and the high compression resistance character is fully used.
圆形支护结构利用土的拱效应，降低了作用在支护结构上的土压力，同时将外部荷载转化为内部压力，充分发挥了混凝土抗压性能好的特点。
Excellent resistance to oil, high temperature resistance, weather resistance are good, but the mechanical strength, compression deformation rate and water resistance is slightly worse.
对油品有极佳的抵抗力，耐高温、耐候性均佳，但机械强度、压缩变形率及耐水性稍差。
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