small bore heating system
small bore heating system
[建筑英汉词典]
small bore heating system小直径管供热系统
是什么意思，small bore heating system的解释，small bore heating system的翻译
small bore heating system
[建筑英汉词典]
small bore heating system是什么意思，small bore heating system的解释，small bore heating system的翻译