柠檬酸（盐）产品存储指南 Storage Guidelines for Citric Acid & Citrates 一、产品保持密闭并贮存在阴凉、干燥、通风、无污染的环境下，不应露天存放。不得与 有毒、有害、易腐蚀、易污染等物质混存。最佳贮存温度 30℃以下、相对湿度 50%以下保存。 避免储存温度高于 40℃或湿度 70%以上，以防结块或受潮，不推荐长期堆放。 Citric Acid and Citrates shall be kept in tightly closed containers in a cool, dry, well-ventilated and pollution-

The lander-ascender combination of China's Chang'e 5 robotic lunar probe has finished gathering subsurface samples and packed them in vacuum container and is continuing collecting surface substances, according to the China National Space Administration.The administration said in a statement on Wedne