低拱
- 网络depressed arch; drop arch
低拱低拱
depressed arch
depressed centre flat... ... depressed key 按键，按钮 depressed arch 低拱 depressed area n. 贫困地区,萧条区 ...
drop arch
材料科学专业词汇(D) ... Drop 落砂(铸疵) drop arch 低拱 Drop cutting 下穿切割 ...
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