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Is the agreed tank venting system being used?
已使用经同意之通气系统？
youdao
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Warning! System fluid may be hot. Use Caution when manual venting hot water systems.
警告！系统液体可能是热的。对热水系统手动排气时要小心谨慎。
youdao
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Warning! System fluid may be hot. Use Caution when manual venting hot water systems.
警告！系统液体可能是热的。对热水系统手动排气时要小心谨慎。
youdao