光亮油是经过充分精制的高黏度润滑油料。由减压渣油制取。
将从减压渣油制取的基础油称为光亮油，BS是光亮油（Bright Stock）的英文字头。每类光亮油也按其粘度分为若干牌号，其牌号中是数字表示的是该基础油在200F时的赛氏通用粘度秒数（SUS）的大约值。
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光亮油原料收率为16.38%，其凝点较高，粘度较小，结构族组成中的烷基碳率较高。
The yield of bright stock is 16. 38%, and its characteristics are high solidifying point, low viscosity and high CP %.
介绍餐具光亮镀银的全套实用工艺，包括化学抛光、机械抛光、除蜡、除油、镀镍、镀银、以及镀后处理等。
A complete bright silver plating process for deluxe tableware including chemical polishing, mechanical polishing, degreasing, cleaning, nickle plating, silver plating and post-treatment is suggested.
调节神经，消除紧迫，提高抗应激和抗感染能力，减少发病。促进生长发育，肌肉红润，缩短换羽时间，使羽毛油粉光亮；
Regulate nerve, eliminating urgency to improve anti-stress and anti-infection and reduce morbidity. promote growth and development, muscle red, reduced moulting time, so feather light oil powder;
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