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PH.20

例句

释义:
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1.
The sperm protein used in the new birth control vaccine is called Ph-20. So far it has only been found in Guinea pigs.
在新节育疫苗中使用的精子蛋白叫PH.20。到目前为止仅见于豚鼠。
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2.
His work would be impressive if done by a Ph. D. economist with twenty years of experience in the profession.
这种工作如果由具有专业工作20年经验的一位经济学博士完成,就会给人留下深刻印象。
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3.
He published his first physics paper at 15, earned his Ph. D. from Caltech at 20 and two years later won a MacArthur prize.
他于15岁发表第一篇物理学论文,20岁从加州理工获得博士学位,并于两年之后赢得麦克阿瑟奖。
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4.
He says, "In 20 years, you'll need a Ph. D. to be a janitor. "
他说,“20年里,为了门卫工作你可能要获得博士学位。”
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5.
With few exceptions, enzyme-catalyzed reactions are performed at pH values near neutrality and at temperatures between 20 and 40oC
酶催化的反应要在接近中性的PH值和20-40°C温度范围内进行,几乎毫无例外。
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