... type of heat treatment 热处理种类 type of pin wheel 针轮分类 tyre-mounted tower crane 轮胎式塔式起重机 ...
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The pin gear-type precision seeder is composed of a wheel body, a rubber ring, a needle wheel and an isolation plate.
本实用新型主要由轮体、胶圈、针轮、隔种板等构成。
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