... PEI 聚醚酰亚胺 PE-others 其他聚乙烯 PES 聚醚砜 ...
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For PE permissions, the user can do any changes in PE, to prevent others into your PE, encryption!
因PE的权限极高，用户可以在PE里面做任何改动，以防其他人进入你的PE，建议加密！
youdao
The students were having PE class Some are playing football, others are running.
一些同学在踢足球，一些同学跑步。
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模块上移
模块下移
不移动