| 释义 |
snail shell sneilʃel 短语⁷⁹⁰⁹¹ 基本例句 蜗牛壳 The concrete for snail shell layer is called' heart' of concrete used in the plant building of the power station, also it is the Most essential and difficult to pour part. 蜗壳层混凝土被称为电站厂房混凝土的“心脏”,是最关键和最难浇筑的部位。 cnki |