工业用缝纫机机械行业认证是可用的，但在魁北克是自愿的。
Industrial sewing machine mechanic trade certification is available, but voluntary, in Quebec.
样品间里配备的工业用缝纫机，它们是锁式线迹缝纫机、包缝机、万能机等。
The sample room is equipped with industrial power machines: there are lock stitch, overlock, zigzag machines, etc.
工业缝纫机是通过压脚启动的，用膝盖运动抬起压脚或降落压脚。
The power machine is run by a foot treadle and USES a knee lift to raise and lower the presser foot.
工业缝纫机是通过压脚启动的，用膝盖运动抬起压脚或降落压脚。
The power machine is run by a foot treadle and USES a knee lift to raise and lower the presser foot.
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