The synthetic technique of new type high molecular ashless dispersant of polybutene (PBP) and dimaleic anhydride was described.
介型高分子聚异丁烯双来酸酐无灰分散剂的艺。
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I don't think there's any higher type in the world than a first-rate Englishman, do you?
我认为世界没有比一流英国人更高级的人了, ?
On the websites, they state that people who use sunbeds before the age of 35 have a higher risk of melanoma, the most dangerous type of skin cancer.
在,他们声称 35 岁之前使用日光浴床的人患黑色素瘤的风险更高,这最危险的一种皮肤癌。
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