... 暗场 dark field 色加深剂 darkening agent 加深 darkening ...
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... 深色 dark color 深色剂 darkening agent 缝补 darn ...
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darkening agent for polyamide fabric 锦纶增深剂
anti-darkening agent 防黯色剂
darkening agentsaddening agent 深色剂
The air-regulating agent could inhibit over-darkening of tobacco leaves and keep their chroma and oil in some degree.
气调贮存可有效抑制烟叶颜色过度转深，并在一定程度上保持烟叶的色度和油分；
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