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Different doses (25,50 and 100 mg/L)of gentamicin were add to the medium of SGC,and cultured for 14 days.After that,the specimen was fixed with 4%paraformaldehyde and stained with toluidine blue.

为观察硫酸庆大霉素对培养的小鼠耳蜗螺旋神经节细胞的细胞生存数和细胞突起长度的影响，在单离培养的出生1-5 d的NIH小鼠SGC培养液中，加入不同浓度的硫酸庆大霉素(25，50，100 mg/L)。

The distribution of engaging efficiency, EHD oil film thickness and tooth face wear and their changes along with transmission parameters are presented.

给出了超环面行星蜗杆传动啮合效率、齿面磨损量和弹流油膜厚度的分布规律及其随传动参数的变化规律。

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

The study on the design methodology of centrifugal compressor with low loss, high load, good performance under full condition and the CFD design of the turbo diffuser and volute is one of the front topics in the field of enhancing the turbosupercharger efficiency.

设计具有低损失、高负荷和良好全工况性能的压气机，以及对扩压器和蜗壳进行气动性优化设计是关系到提高涡轮增压器效率的前沿课题。

Methods auditory brain stem response was used to examine before,after and two weeks after fenestration scala tympani respectively in twenty ears of twenty guinea pigs,and the specimens for light microscope and scanning electron microscopy were made respectively.

方法对 2 0只豚鼠的 2 0耳在开窗术前、术后及开窗修复术后 2周，分别作听性脑干反应检查，并制作术后 2周耳蜗的光镜和扫描电镜标本。

Result: 2 cases had successful cochlear implantats, another severe case failed to have the electrode inserted into the scala tympani.

结果：2例病变较轻者成功地进行了人工耳蜗植入术，术后恢复良好，1例因病变严重电极未能植入。

The neomycin possess the powerful capability of eleminating vestibular hair cells of adult rat;Neomycin intracochlear administration via scale tympani can develop an ideal vestibular dysfunction animal model.Ⅱ.

新霉素对大鼠前庭毛细胞具有毁灭性的破坏作用，新霉素耳蜗内注射的方法可以建立理想的前庭功能障碍动物模型。

The structure of batscochlea is partly resembled withother mammals; meanwhile, there are some specilized aspects, which are considered asmorphologic adaptation to dealing with ultra-high frequency sound wave.

蝙蝠的耳蜗结构在部分相似于其它哺乳类动物的同时，也有部分特化现象的存在，这些特征都被认为是处理超高频声波的形态学适应。

According to the experimental data, detailed analysis is made about the flow in the volute.

根据实验结果，从各个角度对该蜗壳内流体流动参数进行了分析。

A method to determine low noise fan volute structure is provided.

提供了一种确定低噪声离心通风机蜗壳结构的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。