field testnatural corrosion test自然: nature; natural world腐蝕: corrode; corrosion; corrodin ...試驗(yàn): experiment; test; trial天然腐蝕試驗(yàn): natural condition test自然腐蝕: natural corrosion; natural decay; spontaneous corrosion下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯