搜索优化
English
搜索
Copilot
图片
视频
地图
资讯
购物
更多
航班
旅游
酒店
房地产
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
过去 7 天
时间不限
过去 1 小时
过去 24 小时
过去 30 天
按相关度排序
按时间排序
新浪网
2 天
《铁心桥街道志》通过省名镇志终审
本报讯 (邓涛 孙亮) 近日,江苏名镇志《铁心桥街道志》终审会召开,省、市地方志工作办公室组织省内地方志系统专家参与。作为南京主城区第 ...
电子工程专辑
3 天
电机铁心连接工艺及其对性能的影响
在铁中加入硅会降低矫顽力、增加电阻率。此外,在交变磁场环境中,薄带厚度的减少可降低硅钢的涡流损失。电机的定子和转子铁心由数百张硅钢叠装制成,可以减少涡流损失,提高效率。在电机应用中,叠片铁心两侧均有绝缘涂层,以阻断层间涡流。
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
Trump endorses Johnson
'Star Wars' actor dies
Remains ID'd after 30+ yrs
Cold case killer identified
PA voting machine ruling
Commutes death sentences
Lego display collapses
Reveals cancer surgery
Faces new charges
New suspects in '96 case
9/11 plea deals can proceed
NHL fines Stars $100K
US sanctions Russia, Iran
Lenny Randle dies
Bowser meets with Trump
Arrests in death of agent
Woman set on fire identified
Signs deal with Ukraine
Indiana soldier dies in Iraq
Kwon extradited to US
Anchor Aaron Brown dies
Congestion pricing ruling
Reach divorce settlement
Pending home sales rise
World leaders pay tribute
Loses sentencing delay bid
Bird flu in AZ wastewater
DC US attorney to resign
Ex-FSU players sue coach
Appoints new prison leader
Tugboat hits tanker, sinks
Smith drops docs appeal
Near miss for Gonzaga plane
Venezuela fines TikTok $10M
Final payout for victims
反馈