... 气候类别IEC climatic category IEC 外壳成分Case components 铝外壳、塑料外壳、304不锈钢外壳Aluminium、plastic、304 ...
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在这种情况下，骨骼或外壳的原始成分会保留下来，但化石会变得更坚硬、更耐用。
In such cases, the original composition of the bone or shell remains, but the fossil is made harder and more durable.
雌性的银杏树会结果实，造成困扰；果实外壳厚实，含有丁酸，这种成分也会出现在酸腐的牛油中。
Female ginkgoes produce the troublesome seeds, which are covered in a fleshy coating that contains butyric acid, also found in rancid butter.
石灰质鞭毛虫(coccolithophores)是一类覆盖在碳酸钙(粉笔的主要成分)岩石板状外壳上的微生物。
Coccolithophores are microorganisms that are covered in plate-like shells made out of calcium carbonate (chalk). The chalky shells reflect light, turning the ocean a milky turquoise color.
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