open bottomed 中文意思是什麼

open bottomed 解釋
開底
  • open : adj 1 開著的,開放的;可進入的,可分享的 (to); 無蓋的,敞口的;敞開的;展開的;開的;開闊的,開...
  1. An open, flat - bottomed boat with squared ends, propelled by a long pole and used in shallow waters

    方頭或平底船一種用於淺水中並用長篙撐船行進的無篷方頭平底船
  2. Specification for open bottomed taper plug valves for 1st, 2nd and 3rd family gases up to 200 mbar

    壓力可達200毫巴家庭用一類二類和三類燃氣敞口底部錐形旋塞閥規范
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