手机国产精品精彩视频_国产成人亚洲精品色欲AV_99久久久无码国产6精品_国产日韩精品一区二区在线

NC machining is a multidisciplinary and comprehensive high-tech integrating computer, automatic control, modern measurement, microelectronic control and information processing. It has been rapidly developed and widely us

NC machining is a multidisciplinary and comprehensive high-tech integrating computer, automatic control, modern measurement, microelectronic control and information processing. It has been rapidly developed and widely us

Roller lathe is a special roller processing machine tool. The roller is usually used for the upper part of the rolling mill. The roller is an important part of the rolling mill. It uses the pressure produced by a pair or

Generally, the CNC roller bed uses the grid ruler as the feedback component in the longitudinal (Z) and transverse (X) directions for full closed-loop control. The FIDEC numerical control system requires high mechanical

CNC lathe processing technology: on the lathe, the shape and shape of the blank can be changed by using the automatic rotation motion of the product workpiece and the linear motion and curve motion of the tool. Specifica

Classified according to the use of printed materials, such as book printing, newspaper printing, advertising printing, banknote printing, map printing, stationery printing, packaging printing, special printing, etc.(1) B

As soon as the environmental protection policy is about to change the current situation of the oversupply industry, the layout of the printing business will also shift, so the printing enterprises begin to rush to establ

3M Millennium Roll is made of high-strength man-made fabric fibers. Under specific temperature, humidity and pressure, the cut part has self-healing effect. Its porous nonwoven structure has the characteristics of water

In recent years, with the accelerated pace of industrial upgrading of China#39;s textile industry, the product structure of the textile machinery market has undergone tremendous changes. The proportion of traditional tex

1. Blanking: seamless steel pipe for roll body, 45 # round steel for shaft head and flange plates at both ends2. Turning: turning the mating parts of the roller body, end plate and shaft head,3. Welding processing: (acco