external layer meaning in English
外层
Examples
- The external layer of the skin is relatively impermeable to water .
皮肤的外层不透水。 - An independent review board is urging nasa to replace three heat shield panels where inspectors found microscopic cracks on their external layers
一个独立复审委员会呼吁国家航天航空局更换三块隔热瓦，检查人员在这些隔热瓦的外层发现了细微的裂缝。