Tail sand exclude system is the work of will choose to iron powder tail beach volleyball far from the machinery area, in order to guarantee the normal operation of machine.
尾沙排除系统的功用是将选去铁粉的尾沙排到远离本机械的区域，以保证机械的正常运转。
In this paper, the technical channel, match ratio, mechanical property, and anti-chlorine permeability of HPC with tail mineral sand are studied systematically.
系统的研究了尾矿人工砂的技术路线、配合比、机械性能和高强混凝土的氯离子渗透试验。
The result shows that HPC can be compounded with tail mineral sand or the mixture of tail mineral sand and manufactured sand.
结果表明，尾矿以及尾矿人工砂可以用于拌合高性能混凝土。
The technical measure of sand out on top and resin sand at tail is suggested and for those Wells of oil zone developing much better but the physiognomy being complex, horizontal well can be exploited.
建议采取端部脱砂尾追树脂砂工艺措施，对于油层发育较好，但地势复杂的井，可以探索水平井开发。
Distributed in continental shelf depths of all tropica and subtropical oceans, Ophichthidae can burrow in sand and mud substrates or coral reefs by pointed rayless tail tips or acute snouts.
蛇鳗科鱼类广布于各大洋的热带和亚热带大陆架水域，可依靠尖突的头部和尖秃骨化的尾端在沙土或珊瑚礁后潜穴。
When the production tail of a well comes, sand production is very common in sandstone reservoirs. It is necessary to proceed a cleanout service.
当油井进入生产后期后，许多疏松砂岩油藏出砂现象非常普遍，这时候需要对油井进行冲砂作业。
When the production tail of a well comes, sand production is very common in sandstone reservoirs. It is necessary to proceed a cleanout service.
当油井进入生产后期后，许多疏松砂岩油藏出砂现象非常普遍，这时候需要对油井进行冲砂作业。
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