會不會和他們那裏的地層結構有關?地表是clay的話redone會是個問題。
我們這裏家家都有mitigation system。不安裝,一層就在臨界線,安裝後就基本測不出了。
會不會和他們那裏的地層結構有關?地表是clay的話redone會是個問題。
我們這裏家家都有mitigation system。不安裝,一層就在臨界線,安裝後就基本測不出了。
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