material-matching 材质匹配
material-matching test 材质匹配试验
language material matching 语料匹配
material matching properties 材料匹配性
weld material matching test 焊材匹配试验
active material matching ratio 活性物质配比
belt type material matching balance 皮带配料秤
index-matching material connector 折射率匹配物质连接器
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