| 释义 |
p-n 英'piː'en美'piː'en BNC²³⁶²¹³⁺¹
基本例句
Positive-Negative;正-负³³; abbr³³.;=positive-negative 正-负的³⁴
A brief introduction is presented to discuss the performance and finishing process of P-N and its testing results as well.
本文就其性能、阻燃整理工艺及阻燃测试作了介绍。 chemyq |