pneumatic handling. tanks for bulk material transportation. charging hole and locking device.
气动装卸.散装固体产品运输用储器.注入孔与封闭装置
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The fact that the drill hole openings are located under water complicates charging work.
炮眼口位于水下,无疑会使装药工作复杂化.
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还进一步进行了孔底空气间隔器的降震实验的研究,其降震率达10~15%,作为张沟采场辅助的降震措施,并且有效地降低了大块率和根底的产生。
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