Plant-Incorporated Protectants 或植物嵌入式杀虫剂
thermal protectants 热保护剂
Fabric Protectants 织物保护剂
UV protectants 紫外保护剂
CLEANERS AND PROTECTANTS 清洁剂和抛光剂
Surface Rust Protectants 表面防锈剂
BASIC OINTMENTS AND PROTECTANTS 基础软膏及保护剂
N a chemical substance that affords protection, as against frost, rust, insects, etc 保护剂
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