The grouting speed of maize is slower in the earlier and later grouting stage, faster in the middle.
不同品种玉米的灌浆速率大致都是初期低，中期高，后期又降低。
The practices showed that the two stage coupling grouting technology is an effective access to solve the difficult support problem of the incompact and fractured surrounding rock.
实践表明，两步耦合注浆技术是解决松散破碎围岩支护的有效途径。
The practices showed that the two stage coupling grouting technology is an effective access to solve the difficult support problem of the incompact and fractured surrounding rock.
实践表明，两步耦合注浆技术是解决松散破碎围岩支护的有效途径。
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