covering material 被覆物 ; 覆盖材料 ; 涂料 ; 罩面材料
roof covering material 屋顶覆盖层材料
wall covering material 墙面覆盖材料
nursery bed covering material 苗床土材料
cornea covering material 角膜覆盖材料
anatomy-covering material 尸体覆盖材料
land covering material 下垫面材料
corneal covering material 角膜覆盖材料
The seed has an outer coating that surrounds the genetic material of the new plant, and inside this covering is a concentrated supply of nutrients.
种子有一层外壳，包裹着新植物的遗传物质，外壳内部是集中的营养供应。
In the study, the researchers asked college students to take a math exam covering material they had never seen before.
在这项实验中，研究者请一些大学生参加一场数学考试，而考试内容他们以前从未接触过。
A covering material made of glass fibers in resins.
玻璃光纤树脂制成的覆盖材料。
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