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density of coal seam
释义
density of coal seam
煤层密度
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hand-held sinker
hand-held thermal imager
hand-held TV camera
hand-held welder
hand hemming
hand hoe
hand hoist
hand hoisting
hand (hold)
hand hold
hand-hold
handhold
hand-hold infrared alarm
hand hole
handhole
handhole and manhole openings
handhole cover
hand hole cover
handhole door
handhole flange nipple
handhole nipple cap
hand hole plate
handhole plate
handhole plate bolt
handhole plate gasket
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更新时间:2024/11/5 15:52:32