三元乙丁橡胶 EPDM
乙丁烯氟灵 Ethalfluralin
乙丁氟灵 benfluralin
三乙丁酮 trepibutone
昆酸乙丁酯 butyl acetyl ricinoleate
乙胺丁醇 [药] ethambutol ; EMB ; Ethambutol free base ; Ethambutol Hydrochloride
聚乙丁烯胺 PIBA
丁酸乙酯 ethyl butyrate ; Butyric acid ethyl ester ; Ethyl butanoate ; EOPB
碳酸乙丁酯 Ethyl butyl carbonate
乙酸异丁酯 Acetic acid isobutyl ester ; Isobutyl acetate extra pure ; acetic acid isobuty
答：科学家们已经识别出五种截然不同的肝炎病毒并以甲、乙、丙、丁、戊型作为辨识。虽然它们都会引起肝病，但在重要方面又有所不同。
A: Scientists have identified five unique hepatitis viruses, identified by the letters a, b, c, d, and E. While all cause liver disease, they vary in important ways.
科学家们已经识别出五种截然不同的肝炎病毒并以甲、乙、丙、丁、戊型作为辨识。 虽然它们都会引起肝病，但在重要方面又有所不同。
Scientists have identified five unique hepatitis viruses, identified by the letters A, B, C, D, and E. While all cause liver disease, they vary in important ways.
本文研究了聚丙烯酸丁酯／聚甲基丙烯酸乙酯核／壳结构弹性体粒子对HIPS的增韧作用，提出了一个新的增韧机理。
The toughening of HIPS is studied by blending it with a polybutylacrylate/polyethylmethacrylate core/shell structure elastomer particles, an a new mechanism of toughening isproposed.
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