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1·The core tube assembly has an inlet for receiving solid material at a rear end and an outlet for discharging material at a forward end.

芯管组件具有在后端处用于接收固体材料的入口和在前端处用于排出材料的出口。

2·The utility model relates to a permeation tube used for discharging the seepage water in an underground structure and an engineering structure.

本实用新型涉及一种用于排出地下及工程结构中渗水的渗透管。

3·Some slots are made on the discharging core tube, which can keep the pressure drop stable. By means of the improvement...

压降上升问题可以通过在排气芯管上开若干条狭缝加以解决。