檢視热水循环泵的原始碼

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|<center>'''热水循环泵'''<br><img
src="https://pic.baike.soso.com/p/20131119/20131119141234-1070894861.jpg " width="280"></center><small>  圖片來自优酷</small> 
|}
'''机械设备'''

为循环使用的热载体提供稳定压力及流速的机械设备