1. 水闸：penetration test 贯入度试验 | penstock 水闸 | percolating 渗流;渗透
2. 压力水管：浸透 penetration? | 压力水管 penstock? | 压密度 percent consolidation?
3. 水门：Pensky-Martens 彭斯基-马顿试验器 | penstock 水门 | penstock 压力水
4. 压力管：penetrometer 针入度计 | penstock 压力管 | per cent 百分数
noun
1. conduit that carries a rapid flow of water controlled by a sluicegate
2. regulator consisting of a valve or gate that controls the rate of water flow through a sluice