This system has higher con-trolling precision and reliability, and is suitable for the control of gas, carburizing of the one or multiple pit furnaces.

该系统具有较高的控制精度和可靠性，适用于单台或多台井式炉气体渗碳的控制。

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Low head pump system has several types, among which pit tubular pump system is a new one.

低扬程泵装置有多种型式，竖井式贯流泵装置是一种较新的低扬程泵装置型式。

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The system consists of a swirling chamber, two vertical buckets on its wall, a drop shaft and a water cushion pit with one blind tunnel.

本文通过模型试验研究涡室-竖井内消能系统，用内设阻涡坎的涡室连接泄洪洞和竖井，带盲洞的消力井连接竖井和导流洞。

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The next one, coming soon, will pit the press against politicians who believe the law should underpin any new system of regulation.

BBC: The BBC has faced worse crises