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鼓膜内陷

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The prevalence of tympanic membrane invagination was 15% and 47.5% respectively for 2 kPa /50 s and 4 kPa/50 s.

2kPa/50s"和"4kPa/50s两种情况下,鼓膜产生内陷或略内陷的发生率分别为15%和47.5%。

Results showed: The rates of Riveters's tinnitus, deafness, insomnia, dizziness, fatigue and tympana sunken, incrassated, perforated were higher than those of Trial pilots, and all had statistically significant difference P

结果表明:铆工耳鸣、耳聋、失眠、头昏、疲乏、鼓膜内陷、增厚和穿孔检出率均高于试飞,除头昏和疲乏外,其余均有统计学意义P

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。