婚礼真是件折腾人的事，办完后得好好休息才行。Weddings are so much hassle that you need a good break afterwards.别那样折腾他了, 他毕竟还是个孩子.Stop pulling him about like that; he's a child after all.训练可真折腾人, 我已经筋疲力尽了!During the training they really pu...
简析FB411毛纺粗纱机的设计与实践.Brief to designation and practice of wool roving frame FB 411.由于粗纱机成型过程中张力不合适造成粗纱伸长不匀.Stretch in roving due to improper tension in the roving.粗纱机是棉纺厂的重要生产设备.Flyer frame is one of the important equipmen...