为了减轻油气井压裂后对地层的污染并降低作业成本，研制了高强度环空压裂专用悬挂器。
To reduce the pollution of the oil-gas well towards the bottom after its fracturing and decrease the operation costs, the hanger specially used for annulus feeding fracturing was developed.
整机关键结构采用高强度板材，能够满足在多石、恶劣地面环境中作业。
Main structure USES high strength plate and is suitable for working in stony, worse earth condition.
索道在特大桥施工中安全适用，能满足吊装作业和高强度工作量要求。
The result showed that the hoisting cableway was safety and appliance in the construction of bridge, and it was suitable in the request of hoisting working and high strength workload.
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