at this time the best experimental conditions fluoride removal rate of activated alumina up to 98. 8%.

nevertheless, up to the present, the chemical basis of fluoride toxicity to aquatic organisms is not well understood.

不过，至目前为止，该化学品的基础上氟化物毒性对水生生物是没有很好的了解。

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the invention relates to a preparation method of a polyvinylidene fluoride (pvdf) ultrafiltration membrane with improved permeability.

本发明涉及一种改善通透性的聚偏氟乙烯超滤膜的制备方法。

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the american dietetic association reaffirms that fluoride is an important element for all mineralized tissues in the body.

美国膳食协会再次肯定：氟化物是人体所有的矿化组织重要的物质。

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in the production of fluoride plastic film, defects on the surface of the film are the key factors that affect the quality.

在氟塑料薄膜生产中，薄膜表面产生的疵点是影响薄膜质量的关键因素。

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the effects of high level fluoride intake on the children's health in pastoral area contaminated by fluoride in industrial waste gas.

高氟摄入对工业氟污染牧区儿童健康的影响。

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the advice is familiar: brush and floss regularly, use fluoride mouthwash, limit snacks and sweet drinks, visit the dentist twice a year.

关于护牙的提醒都是类似的：经常用牙刷和牙线刷牙，漱口时用含氟漱口液，节制吃零食和喝甜味饮料，两年看一次牙医。

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the addition of fluoride to the adhesive did not significantly reduce the incidence of enamel decalcification.

此外氟的胶粘剂没有显着降低发病率的釉质脱钙。

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results the result shows that there has been a significant decrease in fluoride in indoor and outdoor environment since oven renovation.

结果各项内外环境氟的监测数据表明，改炉后较改炉前所有指标均有大幅度的下降。

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the company is located in the scenic huangshan mountain scenic area, with nearly 20 years of fluoride plastic pump production experience.

本公司位于风景秀丽的黄山风景区，拥有近二十年的氟塑料泵的生产经验。

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the american dental association recommends brushing your teeth and tongue with a fluoride toothpaste at least twice a day.

美国牙科协会建议人们每天用含氟牙膏清洗牙齿和舌头至少两次。

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scientists say extra fluoride is likely to have at least a small additional effect on enamel -- but more research is needed.

科学家们说，额外添加的氟化物可能会对牙釉质产生一点细微的保护效果，不过，这也有赖于更多研究的证实。

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in one amusing passage, for example, mr talbott describes a chat between president clinton, mr gore and some of their speechwriters.

例如，在文中就有这样一段有趣的片段。塔尔博特先生记述了克林顿总统，戈尔先生和一些演说撰稿人之间的交谈。

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but reagan and his speechwriters insisted on keeping it in.

但里根和撰稿人坚持保留这句话。

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some believe that the best speechwriters are born with a talent and have a natural creative instinct, and that speechwriting is an art form.

有些人认为那些最优秀的演讲稿撰写人是天赋异禀，而演讲稿的撰写也是一种艺术。

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stephanie mayes called to say thank you for dinner the other night.

梅耶太太来电话感谢那天的晚宴。

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sandostatin, posterior pituitary hormones and phentolamine together for varices of esophagus and fundus ventriculi rupturing and bleeding

善宁、垂体后叶素、酚妥拉明联用治疗食管胃底静脉曲张破裂出血

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objective to study the curative therapy of varices of esophagus and fundus of stomach.

目的探讨食管胃底静脉曲张的有效治疗方法。

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but music, pure, simple, apparently unpolitical, remained her weapon of first resort.

然而，只有她的音乐，简洁明快，非政治化的音乐，才一直是她的首选。

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poor shy unpolitical i would have been a loser in the 'running' end.

可怜害羞不关心政治的我将成为一个失败者。

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his purpose in kashmir had not been entirely unpolitical.

他去克什米尔并不是完全没有政治考虑。

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