outer sheath中文什么意思

例句与用法

1. 2 . working temperature for long time not exceed the following regulation : 90 for cable of pvc outer sheath , 80 for cable of polythene outer sheath
   2电缆线芯长期允许工作温度不得超过下列规定：外护层是聚氯乙烯套的电缆为90外护层是聚乙烯套的电缆为80 。
2. Dr hess envisages a ray of light travelling down an optical fibre made from two materials : a core with a negative refractive index and an outer sheath with a positive one
   赫斯博士构想出一个画面，即一道光正穿越于一个由两种材料制作的光导纤维，一种是具有正折射指数的纤维核，另一种则是具有正折射指数的外围。
3. Dr hess envisages a ray of light travelling down an optical fibre made from two materials : a core with a negative refractive index and an outer sheath with a positive one
   赫斯博士构想出一个画面，即一道光正穿越于一个由两种材料制作的光导纤维，一种是具有阴性折射指数的纤维核，另一种则是具有阳性折射指数的外围。
4. The requirements for flexible cords include mainly the marking requirements on the outer sheath , the requirements on colour identification , conductors and insulation , and complying with the relevant standards
   软电线的特定安全规格主要是在包套上要有适当标记，并要有适当的色标、导体和绝缘，及符合有关的规格等。