Novel gaseous detector is used in colliery
Novel gaseous detector is used in colliery, including handle, first branch, folded sheet, first slot, inserted bar, second branch, gaseous manhole, first slot, detector main part, stretch cord, curb plate, cover, hook -and -loop fastener hooking face, charge interface and magic tape matt surface, de...
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Format: | Patent |
Sprache: | chi ; eng |
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