名词
中文翻译：底层涂层漆
同义词：
['undercoat', 'undercoating', 'base coat例句：1. The undercoat is the first layer of paint that protects the underlying surface.（底层涂层是保护底层表面的第一层油漆。）']
例句：
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1. The undercoat is the first layer of paint that protects the underlying surface.
底层涂层是保护底层表面的第一层油漆。
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2.The undercoat was applied to the wood before it was sanded and painted.
在打磨和上漆之前，先在木材上涂上底层涂层。
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3. The undercoat was applied with a brush to ensure even coverage.
用刷子涂抹底层涂层以确保均匀覆盖。