按一定比例，将水灰比小于0.25的水泥、沙、石、速凝剂拌和，利用压缩空气通过软管输送到喷射机喷嘴处，与通过呈雾状的加水环混合喷射的混凝土施工方法。
传统的干喷工艺存在粉尘大、回弹高、混凝土质量不稳定等缺陷。
There exist defects in respect of big dust, high rebound, and unstable concrete quality etc. in the traditional dry shotcrete.
选择合适的材料和施工工艺，可有效地降低干喷纤维混凝土的回弹率。
It is also concluded that the rebound rate of dry-sprayed fiber concrete can be reduced obviously by adoption of rational materials and techniques.
发动机台架试验结果表明，优化干喷钢砂电喷涂工艺规范用于修复曲轴是可行的。
The bed test of diesel engine indicated that the optimized dry blasting steel grit and arc spraying technology was feasible to repairing crankshaft.
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