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
新浪网
4 年
【专用料解读】CPP普通专用料逐渐丰富 高端专用料缺口大
流延聚丙烯膜(CPP)是通过将熔体流延骤冷生产的一种无拉伸、非取向的平挤薄膜。国内CPP薄膜从20世纪80年代发展至今,已经具有较高的生产能力和生产水平,普通薄膜领域甚至出现过剩局面。然而,目前国内用于CPP膜生产的专用料发展进程相对缓慢,有30%左右的 ...
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
To hit 8 nations with tariffs
New details released
Missing girl found dead
Driver gets 24 years to life
Former child star dies
Judge limits federal agents
Sues VA over voter data
Won’t run for office this yr
Judge urges US grant visa
DOJ launches investigation
National Guard to stay in DC
Bill to fund science agencies
Ratcliffe meets w/ Rodríguez
Asks to dismiss prosecutors
New High Seas Treaty
Says 'Board of Peace' formed
Denies abuse allegations
Plane slides off taxiway
Quake strikes off OR coast
Southern Africa floods
Issues warning to airlines
Denver schools block ChatGPT
Edison sues over Eaton fire
To hear Bayer's bid
VA backs redrawing maps
To study cellphone radiation
Contract talks resume
Gets extension in US probe
Measles cases rise in SC
UKR delegation arrives in US
To test ads in ChatGPT
反馈