老顽童辘轳 发表于 2017-5-4 11:29:48

As referenced by ASME B20.1 for use in conjunction with that standard

applguidelines_verticl_reciproc_conveyrs

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ygs67 发表于 2017-5-4 11:35:55

请问是哪一版？                        

admin 发表于 2017-5-5 11:50:04

谢谢您的分享,金币已奖励!
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