Abrasionproof that twisting strander was used decreases device of being qualified for next round of competitions
The utility model discloses an abrasionproof that twisting strander was used decreases device of being qualified for next round of competitions, including roof and unable adjustment base, the unable adjustment base top is provided with a plurality of dwangs, and the both sides of dwang pass through...
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Format: | Patent |
Sprache: | chi ; eng |
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