English translation for "two pipe direct return system"

双管直接回水供暖系统
双管直接回水系统

Similar Words：

"two pin plug" English translation, "two pinned arch" English translation, "two pints of mild" English translation, "two pipe" English translation, "two pipe direct downfeed system" English translation, "two pipe drop heating system" English translation, "two pipe heating system" English translation, "two pipe hot water downfeed system" English translation, "two pipe hot water upfeed system" English translation, "two pipe jet pump" English translation