研究尿中反式，反粘康酸对苯职业接触的生物学极限。
Study the biological limit of urine trans, trans-muconic acid for occupational exposure to benzene.
1943年4月，瑞士科学家阿尔伯特·霍夫曼不小心在指尖粘了一点麦角酸二乙基酰胺，从而进行了一次意料之外的心灵之旅。
Swiss scientist Albert Hofmann took an unexpected journey of the mind in April 1943 when he accidentally absorbed one of his chemical discoveries, lysergic acid diethylamide, through his fingertips.
结论：使用酸蚀剂和硅烷偶联剂都能提高贴面烤瓷的粘接强度，但酸蚀剂起主要作用。
Conclusions: Both etching of porcelain surface and use of silane yield higher bond strength, but the etching is the chief factor.
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