其阀门为与球体相吻合的球带形管道口。
The valve is a pipeline opening which is spherical zone shape and anastomosed with the sphere.
太多钢索在管道口外容易发生绞缠，导致纽结。
Too many wire used in pipe are prone to foul, leading to a knot.
不能小于安全阀的管道口径，也不能在排泄管上安装任何缩径管接头。
Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.
冷水北沟铅锌矿赋存于元古界栾川群和管道口群地层中，矿体受断裂破碎带及矽卡岩带控制。
The Lenshuibeigou lead-zinc deposit occurs in Proterozoic Luanchuan group and Guandaokou group formation and is controlled by faulted and fractured zone and skarn zone.
为提醒我们，我们倒进排水管道的物品最终将流入海洋，在温哥华的一些下水道口，人们描画了黄色的鲑鱼图案。
Painted yellow salmon now decorate some of the catch-basins of Vancouver, to remind us that what we put into our storm sewers eventually ends up in our oceans.
为提醒我们，我们倒进排水管道的物品最终将流入海洋，在温哥华的一些下水道口，人们描画了黄色的鲑鱼图案。
Painted yellow salmon now decorate some of the catch-basins of Vancouver, to remind us that what we put into our storm sewers eventually ends up in our oceans.
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