undergravel 中文意思是什麼
undergravel
解釋
底砂過濾式-
We at manhing also manufacture aquarium and pet accessories, namely fishi - ng battery air pump, 9 differents item of undergravel filters ( 5 - 70gallons ), bio filter - s and accessories
我們還有生產其他之水族及寵物用品。釣魚電池氣泵、缸底過濾版由5生70卡倫合共9個不同型號、生物過濾器材及其他產品等！
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