The utility model is also provided with a wind-proofrod which can drag the umbrella cover in upwind ride to prevent the umbrella cover from being blown up and turned over.
该伞还设有防风杆，迎风骑车时，它可牵拉住伞面，以免伞面被风吹起上翻。
2
The advanced hydraulic system has self-return and drill rod stuck proof implements, which ensure great maneuverability and reliability.
先进的液压系统有自我的回报和钻杆坚持证明实施，确保伟大的机动性和可靠性。
3
The results show that the long rod insulator features light weight, better anti-ageing performance, better anti-pollution behaviour, high tensile strength, puncture-proof and easy maintenance.