1.Basic PPE requirements-hardhat, steel toe shoes, safety glasses, hi-vizvest,
基本PPE--全帽,钢头全鞋,全眼镜,光背心.
2.A convenient synthesis of triphenylmethyl ether was studied via the reaction of triphenylmethyl carbinol and alcohol, using PPE as dehydrating agent. \;
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全帽,钢头
光背心.
表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
水剂,将三苯甲醇与醇
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