English
全部
搜索
图片
视频
地图
资讯
Copilot
更多
购物
航班
旅游
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最新
最佳匹配
搜狐
5 年
电热汇分享不锈钢加热管与ptc加热器的优缺点对比!记住这2点!
有人咨询电热汇问:不锈钢加热管与ptc加热管的优缺点对比是什么?那么今天来分别介绍一下不锈钢加热管与ptc加热管。 不锈钢加热管的缺点: 1)不锈钢电热管实际上长期处于内部电热丝散热不良的状态下。用于绝缘的氧化镁因此很容易溶解,并且烧穿电热管 ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
今日热点
LA County declares emergency
Says six killed in US strike
AU court upholds visa ban
New York confirms first case
Judge issues protective order
Skull from 2300 BC found
Judge blocks land transfer
US revokes 6 visas
Iconic poster artist dies
Prominent surgeon indicted
Meta removes Facebook page
Texas flood disaster probe
Airports refuse to play video
Earth’s magnetic field weakens
Former Kenyan PM dies
Republicans want testimony
Withdraws NY casino bid
Pentagon contractor charged
Countersues minority owners
R&B icon D’Angelo dies
Plans $13B US investment
Browns WR retires at 24
News outlets reject policy
On slowdown in US hiring
To add Spotify video podcasts
Bus catches fire in India
Trump meets with Milei
Arsonist pleads guilty
NRA sues California
Cambodian executive charged
Second suspect charged
反馈