久久AV无码精品人妻系列,av一区二区不卡,97在线精品视频,亚州精品无码久久久久av

07-14

2020

Do you know the programming skills used in the Multi-Axis Challenge?

In this video, we will introduce you to the multi-axis programming techniques used when machining DNA model parts for the multi-axis challenge. Mastering multi-axis programming skills can significantly reduce processing cycle time, while also getting better surface quality parts.

06-29

2020

Basic knowledge of cutting tools, this one is enough

A good horse needs to be equipped with a good saddle and use advanced numerical control processing equipment. If the tool used is wrong, it is useless! The selection of appropriate tool materials has a great impact on tool life, processing efficiency, processing quality and processing costs. This article provides dry goods about tool knowledge, collection and forwarding, learn together.

06-17

2020

What highlights can you see when you walk into a German mold factory?

Let us through the video into a German mold factory, to see their working environment, staff mental outlook, the use of machine tools, software, fixtures, tools, and measurement and automation, etc., you see what highlights?

11-01

2018

Aluminum alloy drilling method

Aluminum and its alloys are widely used in various industrial sectors, especially in the aviation field, because of their low density and certain mechanical properties, energy and good electrical conductivity, thermal conductivity and corrosion resistance. But in the drilling process, aluminum alloy has a lot of processing problems. Aluminum alloy according to different manufacturing methods, divided into casting and deformation (can be rolled) two categories.

< 12 >
亚洲少妇av一二三四区| 69精品人人人人人人人人人| 一级做a爱久久久久久久| 精品国产在天天在线观看| 国产精品怕怕怕免费视频| 999偷拍精品视频| 久久国产麻豆| 日日噜噜夜夜狠狠视频| 在线精品国精品国产尤物| 牛牛影院99av| 中文字幕日韩日本道| 夫妻3P视频| 欧美综合网| 色婷婷婷五月| 加勒比 无码中文| www.偷拍视频.com| 十八禁无遮挡99精品国产| 国产精品爆乳奶水无码视频| 91麻豆精品亚洲永久| 国内精品久久久久久久影视麻豆| 中文字幕人妻熟女人妻av网址| 亚洲综合区小说区激情区| 国产色呦呦| 日韩欧美中文| 无码一区二区三区| 日韩aⅴ| 中文一区一区三区高中清不卡| 无码熟妇人妻AV影音先锋| 无码人妻精品一区二区三| 成人伊红大香蕉| 欧美亚洲另类天堂视频| 日本97AV| 亚洲 色 一区二区三区| 少妇做爰xxxx九色| 91护士站| 九九综合九九综合网站| 孕交视频| 亚洲欧美另| 大肉大捧一进一出好爽视频MBA| 国产精品国产三级区别第一集| 国产精品久久久久久久毛片动漫|