久久婷婷色综合,97超碰黄色,韩国AV老熟妇,美国av黄片一区二区

021-65682142
PRODUCTS CENTER

產(chǎn)品中心

當前位置:首頁產(chǎn)品中心本生燈Bunsen burner
Bunsen burner

產(chǎn)品簡介

Bunsen burner can be used to heating the non combustible objects or solution. It can be used to heating the object to the high temperature. Maximum temperature is close to 1900 ° C.

產(chǎn)品型號:
更新時間:2017-07-05
廠商性質(zhì):生產(chǎn)廠家
訪問量:3985
詳細介紹在線留言

The company produces a series of Bunsen burner,it Is based on the requirements of various types of science laboratory, High quality materials, processed with advanced technology. Has heating efficient, uses safety but inexpensive advantages, Prices far below achieve equal quality levels imports product standards, that Is you choose Excellent ideal programs in Experimental equipment.
Bunsen burner () is one of the common temperature heating tools in Science Laboratory. The tool is named after Robert •  William • Bunsen. The inventor is his assistant Peter Desdega. He first made a paragraph heater. And Faraday improved it in 1855. can burn gas safely.
Flame will not be back into the gas supply pipe. Fuel is usually coal gas or natural gas, propane gas, etc.
Product Features:
can be used to heating the non combustible objects or solution. It can be used to heating the object to the high temperature. Maximum temperature is close to 1900 ° C.
Because the heating temperature higher than the alcohol lamp, Therefore, the lamp must be used more heat-resistant material of metal. Also, because its fuel is gaseous at room temperature.Use should pay special attention to the safety of pipelines. used to pay attention to use of safety. You must first check whether all the switches in the closed state before use it. Sure all switches are closed state, Can open master switch.
 

在線留言

留言框

  • 產(chǎn)品:

  • 您的單位:

  • 您的姓名:

  • 聯(lián)系電話:

  • 常用郵箱:

  • 省份:

  • 詳細地址:

  • 補充說明:

  • 驗證碼:

    請輸入計算結(jié)果(填寫阿拉伯數(shù)字),如:三加四=7

掃碼加微信,了解最新動態(tài)

掃碼加微信
021-65682142

Copyright © 2025 上海碩光電子科技有限公司版權(quán)所有

技術(shù)支持:化工儀器網(wǎng)    sitemap.xml

滬公網(wǎng)安備 31011002005640號

亚洲欧美专区图片专区| 熟妇精品666| 欧美内射少妇| 亚洲国产欧美视频| 国产亚洲自拍AⅤ| 夜夜路亚洲欧美| 后入中文字幕在忙| 91国精产品久久久久久| 日韩偷怕自拍| 在线调教视频网| 高清无码人妻免费视频在线观看| 大鸡吧操大屁股白浆视频| 香蕉伊热19| 性感的毛片网站免费| 欧美日韩在线影院一区h| 亚洲欧洲日本韩国精品一区二区三区 | 激情深爱欧美| 欧美大香蕉爽爽| 中文字幕三区四一女同| 色婷婷91久久影院| 日本不卡在线免费观看一区二区三区| 亚洲 欧美 日韩 色欲| 欧美特级一级大黄片| 肏白浆视频| 日本最新免费二三区| 亚洲一区二区三区激情图| 日韩女同一区二区| 动态色图国产91| 中文字幕av人| 欧美日本无马一区二区 | 中文字幕一区 久久| 午夜性色a| 日韩中文人妻| 中文人妻资源| 人妻后入国产流出一区| 国产高清激情综合国产在线| 日本不卡福利视频了视频| 日韩大尺度电影免费播放久久| 欧美噜噜久久久XXX成人高潮| 欧美 日韩 亚洲 国产| 蜜桃视频com婷婷|