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
最佳匹配
最新
电子工程专辑
6 年
为什么采用4~20mA的电流来传输模拟量?
大家可能会非常熟悉RS232,RS485,CAN等工业上常用的总线,他们都是传输数字信号的方式。那么,我们用什么方式来传输模拟信号呢?工业上普遍需要测量各类非电物理量,例如温度、压力、速度、角度等,这些都需要转换成模拟量电信号才能传输到几百米外的 ...
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
Signs US joint venture deal
Pulls 'Board of Peace' invite
Set for first trilateral talks
Joins in anti-AI campaign
2026 Oscar nominees
Betting gambler sentenced
Plans to climb Taipei 101
Colorectal cancer deaths rise
Venezuela opens debate
Asks judge to toss lawsuit
Judge rejects charges
Sues JPMorgan Chase, CEO
France intercepts oil tanker
Homicide rate declines
Launches FL Senate bid
Mortgage rate rises
Costas to return to NBC
US completes withdrawal
To testify at Senate hearing
Paramount extends deadline
Mexico arrests ‘El Botox’
Rees joins Falcons
Investigating data breach
To sell Optimus robots by '27
US denies oil security
Two held in anti-ICE protest
Enters transfer portal
Takeaways from testimony
Announces 2026 global tour
Halts fetal tissue research
Landslides in New Zealand
Hired as Ravens head coach
FBI investigating death
Signs Washington Spirit deal
反馈