国产美女跟人操,少妇黄色视频a,亚洲主播夜夜操,日产精品一线二线三线优势

  • 中文
  • |
  • English
  • 免責(zé)申明
  • |
  • 網(wǎng)站地圖
banner_nei.jpg
A.jpg

Vibration-resistant electric contact pressure gauge

The shock-resistant electric contact pressure gauge has excellent characteristics such as resistanc
  • Stable quality: implement process quality control, pay attention to quality, and test in many aspects!
  • Reasonable price: effective internal cost control, cost reduction and customer service!
  • Quick delivery: perfect production line, sufficient inventory and shortened delivery time!
  • Tel:86-0550-2406812
  • Mobile phone:17856844858
  • E-mail:13605508812@139.com
Description

The shock-resistant electric contact pressure gauge has excellent characteristics such as resistance to medium pulsation and impact load, resistance to environmental vibration, etc., and is suitable for measuring the pressure of gases, liquids or steam that are not corrosive to copper and copper alloys. The instrument is equipped with upper and lower limit two-position switch type contact devices, which send out a signal or turn on and off the control circuit when the pressure reaches the set value for automatic control or signalling of the operating system. Its anti-vibration structure can effectively suppress the jitter and impact of the pointer, protect the contacts, make the indicator clear, the electrical signal switching is reliable, and the work is stable.
Application of shock-resistant electric contact pressure gauge: Widely used in industrial production processes such as machinery, chemical industry, petroleum, metallurgy, and electric power.
Environmental conditions for use: Operating temperature: -25℃~55℃
Upper limit of working pressure: not more than 2/3 of the upper limit of the instrument
The vibration frequency of the working environment is not more than 25Hz, and the amplitude is not more than 0.5mm

Browse:
Return To The Top
?
国产女人喷水一区| 超碰97香蕉| free性满足HD国产精品久| 日韩免费AV| 国产毛片一区二区精品久久久| A级毛片免费看久久免费光看| 少妇国精产品一二三区| 国产精品成人无码7777在线观| 美女潮喷出白浆| 蜜臀av在线| 18禁亚洲深夜福利人口| 色欲精品人妻AV一区.| 免费视频国产在线观看| 女人被狂躁c到高潮| 少妇极品久久| www一区二区| 水蜜桃成视频人在线看| 91蝌蚪人妻| 最近中文字幕MV在线看| 欧美猛交互摸高潮在线播放| 观看国产色欲色欲色欲WWW| 自拍偷自拍亚洲精品被多人伦好爽| 黑人精品无码| 欧美一区二区在线观看视频| 国产成人无码影片在线观看| 停停五月丁香综合网| 又白又嫩毛又多无码毛片| 少。妇与黑人xxxx| 男人的天堂免费视频资源在线观看 | 爽妇亚洲综合网站| 日韩av片无码一区二区三区不卡| 久久黄色av| 桃秀午夜福利视频| 久久人爽爽人爽爽AV无码自慰| 日韩丝袜美女被操| 最近免费中文字幕mv在线视频3| 亚洲午夜影院在线| 日产无人区一线二线三线观看| 亚洲精品丝袜日韩| 18禁无遮挡羞羞污污污污网站| 大肉棒一出一进视频|