蜗

The constructions of toroidal drive are analyzed and compared, and the parameters for designing this kind of drive and the construction of all parts are determined. On this basis, the designing of toroidal drive are furnished.

对超环面行星蜗杆传动的结构进行了分析、对比，确定了这种新型传动的设计参数和各个零件的结构，在此基础上对这种传动进行了设计。

The difference on efficiency, lubrication and wear for toroidal drive with different planet gear tooth shape are discussed.

比较了三种不同齿形超环面行星蜗杆传动在效率、润滑和耐磨寿命三个方面的差异。

This is the main research contents in this paper Enhance the operating efficiency of turbomachine、saving energy become a common understanding. In order to improve the efficiency、output power、comprehensive utilization level of high energy and enhance the operation reliability, numerical simulation of flow field inside turbomachine for several difference uses were studied with our professional dominance based on three practical engineering project. Based on these the axial and centrifugal blowers were designed.

而提高叶轮机械的能量转换效率、节能降耗已成透平机械行业的业内共识，本论文研究利用专业优势，围绕提高几种叶轮机械效率、输出功率、高能量综合利用水平、提高机组运行的可靠性等目标，以三个实际工程研发项目为基础，研究分析了多种特殊用途的叶轮机械内部流动情况，在此基础上，设计研究了轴流与离心两型动车组冷却通风机，并提出烟气轮机与船用涡轮增压器压气机蜗壳的优化方案等。

Methods The cochlear sections of the guinea pigs exposed to experimental blast underpressure were observed using light microscope.

成年豚鼠暴露于不同强度的实验性冲击波负压后，光学显微镜下观察耳蜗的组织学切片病理变化情况。

Results The remarkable changes were observed in the sections of the guinea pigs exposed to experimental blast underpressure of peak more than - 45.5kPa.

结果 当冲击波负压峰值＞-45.5kPa时，耳蜗组织切片出现较明显的病理学改变，最常见的典型病变为底转鼓阶、中阶、螺旋韧带与血管纹出血，且病变程度随着负压峰值的增大而加重。

All affected unimplanted devices have been segregated and are being removed from hospitals' inventory.

所有涉及的未植入的耳蜗设备已经被隔离，并从医院的存货中移除。

This study has achieved the following purposes,observed effects of different levels of noise exposure on the auditory function and the hearing organ of guinea pigs,explored optimal noise exposure profiles for research of NIHL susceptibility,established NIHL susceptibility model,148 differentially expressed genes of cochlea between NIHL susceptible and unsusceptible guinea pigs were screened by using suppression subtractive hybridization.The results of bioinformatics analysis showed that there are 34 sequences whose homology were larger than 80% and match sequence larger than 100 bp.

本研究观察了不同噪声暴露量对豚鼠听觉功能和听觉器官结构的影响，探讨了NIHL易感性研究的最佳噪声暴露方案，建立了NIHL易感豚鼠模型，利用抑制性消减杂交技术筛选NIHL易感与不易感豚鼠耳蜗的差异表达基因片段148条，生物信息学结果显示同源性大于80%且匹配碱基大于100 bp的片段共34条。

In the present study, the experimental and numerical investigation is carried out at an outward volute of circular cross section cooperating with a centrifugal impeller and a vaned diffuser.

本文对一个包含叶轮、有叶扩压器和蜗壳的单级离心压缩机进行了实验和数值研究。

Steady-state simulation including the impeller,vaneless diffuser and volute with different configurations of inlet pipe was carried out to investigate the effects of inlet pipe on the compressor performance.

用数值模拟研究了不同进口管道对离心压气机性能的影响。计算模型包括进口管道、离心叶轮、无叶扩压器、蜗壳和出口管道。

Main products include helical gear units,spiral-bevel gear units,planetary gear units,bevel-helical gear units,worm gear boxes,Screw jacks,speed variator,power ranges 0.12-9550kw customer-designed,combined-designed products are also available which also achieve great success.

产品主要有斜齿轮、螺旋锥齿轮、行星齿轮、蜗轮减速机、螺旋升降机、无级变速机、功率覆盖0.12-9550kw的标准系列，及各种专用、组合和非标设计产品被广泛应用，并有骄人的业绩。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷