... step tread board support 踏板托 step tread plate 脚蹬板 step trench 探沟 ...
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Step support or plate support for tread units of a conveying device, tread units and conveying device.
gossl Harald:用于输送装置的踩踏单元的台阶支承件或平板支承件、踩踏单元、以及输送装置。
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