The thesis developed the optimization design software of geometric parameter for the worm gear including strength check module, the drawing contact lines module, the change lines of tooth thickness of worm, and the parametric modelling software for the reducer which includes parametric modelling of parts and assembly. the cad prototype system is very convenient because of its accessible interfere, simple operation and written in chinese. by input design parameters ， the cad system can make optimization design and strength check for the worm gear ， draw contact lines of tooth flank of worm - gear and change line of tooth thickness of worm ， judge if the tooth flanks of worm undercut and if the sideward tooth of worm - gear hob come to a point ， make project design and structure design for the reducer and draw its 2d parts and assembly
研究和開發了平面二次包絡環面
蝸桿傳動的參數優化設計和校核軟
體系統：包括幾何參數設計計算模塊，強度校核模塊，繪制齒面接觸線模塊，
蝸桿齒厚變化曲線模塊和
蝸桿根切判別模塊；開發了平面二次包絡環面
蝸桿減速器外形與結構尺寸數據庫以及傳動效率數據庫，建立了平面二次包絡環面
蝸桿傳動公差及極限偏差數據庫；開發了平面二次包絡環面
蝸桿減速器參數化建模軟
體：包括零部件的參數化建模模塊和裝配圖的參數化建模模塊，其中零部件的參數化建模包括
蝸桿軸系的參數化建模、
蝸輪軸系的參數化建模、箱
體的參數化建模、端蓋的參數化建模、軸承的參數化建模和其它零部件的參數化建模軟
體模塊。
Early implementations of ejb entity beans were dog slow, partly because the communication costs were too high
早期的ejb實
體bean實現慢如
蝸牛，一部分原因是通信開銷過于高昂。
Solid model of the involute worm gearing solid model with drive ratio 1 / 50 is built by using ideas - 5. 0, then the elastic contact analysis is proceeded on the basis of contact fem. the dynamic evolution image of the area of the contact zone, the load sharing among instantaneous meshing tooth pairs, the distribution of the contact force, and tooth stress are obtained. 3
通過漸開線圓柱
蝸桿、
蝸輪的齒面方程式，利用ideas - 5 . 0軟
體建立了傳動比為1 / 50的漸開線圓柱
蝸桿傳動的實
體幾何模型，在此基礎上應用接觸有限元方法對該傳動進行了彈性接觸分析，包括接觸區的形狀、位置、載荷在瞬時嚙合齒對的分配狀況； 3
The worm - drive is widely used in modern industry, especially the ordinary cylinder worm - drive in machine tool manufacturing sector. main disadvantages of worm dives are lubrication and wear problems due to relatively high sliding at the tooth contacts. the ordinary cylinder worm - drive has almost become an exclusive selection in general low speed transmission work - platform and continuous graduation mechanism
蝸桿傳動具有傳動比大、
體積小、運轉平穩、噪音小等特點，在現代工業中應用非常廣泛，在機床製造業中，普通圓柱
蝸桿傳動的應用尤為普遍，並且幾乎成了一般低速傳動工作臺和連續分度機構的唯一傳動形式。
In the experiments discussed in chapter 5 we generated two recombinant viruses based on an acmnpv - and hasnpv - bac - to - bac system, respectively. in such recombinant viruses the busuctl gene under polyhedrin promoter was inserted into polyhedrin gene locus. a preliminary bioassay was conducted
第五章利用桿狀病毒bac - to - bac系統構建了含有油桐尺蠖核多角
體病毒的類
蝸牛毒素基因的重組病毒racbacctl和rhabacctl ，在其相應宿主甜菜夜蛾和棉鈴蟲的細胞水平和蟲
體水平進行了超表達實驗。
On the base of deducing meshing theory, by simplifying the parameters and using software, the 3d model of the rolling cone - type toroidal drive is given. and the parametric models are realized. the assemble chart of drive is given
在嚙合理論推導的基礎上，通過對滾錐齒超環面行星
蝸桿傳動的各參數進行簡化處理，利用計算機軟
體對滾錐齒超環面行星
蝸桿傳動進行了三維實
體參數化建模，實現了模型的參數化，給出了該傳動的裝配圖，並進行了動態模擬。
According to the high precision and rotation stability requirement of negative scan unit of cylinder photography typesetting machine, the three levels of cylindrical gears transmission separately, the two - stage cylindrical gears - worm drive, and the worm drive was chosen through calculating its velocity ratio, the checking transmission precision, carrying on the movement precision analysis to the sweep unit, and computing overall transmission error
摘要針對圓筒型照相排版機底片掃描裝置要求傳動精度高，轉動平穩的特點，分別選擇三級圓柱齒輪傳動，雙級圓柱齒輪
蝸桿傳動，
蝸桿傳動3種常見的傳動方式，計算其傳動比，驗算傳動精度，對掃描裝置進行運動精度分析，計算總
體傳動誤差。
The process has an advanced principle. the involute hourglass worm drive can realize the design machining of gear form and direction, and the internal meshing honing gear has high efficiency. this process has all merits mentioned above, and also has the advantages of quality stability, high productivity for rude and finish machining
該工藝原理先進，它集有利於實現齒形、齒向設計加工的漸開面環面
蝸桿傳動與高效的內嚙合珩齒的優點與一
體，對齒輪的粗、精加工都有質量穩定、生產效率高的優點。
The soft body of the african snail has a muscular foot on which it creeps
非洲
蝸牛的身
體柔軟，靠強壯有力的腹足蠕動。
Machines in this series are suitable for margin sealing of coil materials such as feminine napkin bags, baby diaper bags, and vest bags electric automatic rotating of turbine and worm adopted for issuance support and dragging support of machines in this series, with orderly congruence of margin sealing, and error - free patterns
該機適用於衛生巾袋嬰兒尿布袋背心袋等卷料的立
體插邊。該機發料架牽引架採用渦輪
蝸桿電動自動旋轉，插邊上下疊合整圖案無誤差。
In the first part, the method of velocity coefficient was used to design a 100mm diameter impeller with five single - arc - cylinder blades, and the method of velocity moment was applied to design the volute " s cross - section. the volute " s cross - section is a rectangle, which was designed as a whole structure with the front shroud of the pump. a special lighting window was designed on the side
在第一部分工作中，設計了一個帶半開式葉輪的微型泵：葉輪外徑100mm 、共5片單圓弧圓柱形葉片；
蝸殼採用速度矩法設計，內為矩形斷面，和泵殼前蓋板為一整
體、透明結構，側面專門設計一個打光窗口。
To study the localization of the peptide, we also generated recombinant viruses containing the ctl - egfp fusion gene, following observation of infected larvae by such viruses will provide insight into the function of baculoviral conotoxinlike genes
為了研究毒素在蟲
體中的定位，構建了類
蝸牛毒素和增強的綠熒光蛋白融合的重組病毒racbacctlgfp2和rhabacctlgfp ，為下一步研究奠定了基礎。
The fungus age, enzyme system, osmotic stabilizer, ca2 + concentration influenced on the formation of the protoplast have been confirmed. the result show that 16 - 18hr fermention, 32 1. 0 % cellulase plus 1. 0 % snailase confected by pba ( phosphate blend ammonium chloride ) contant 0. 2 % ca2 +, acted 3 hr is optimal for the protoplast production of aspergillus. niger
分別採用單因子法和正交實驗法考查，認為16 18hr菌齡的菌絲
體， 32 ，用含0 . 2 ca ~ （ 2 + ）的pba高滲緩沖液配製的1纖維素酶與1
蝸牛酶的混合酶酶解3hr ，得到的原生質
體數最多。
Sow series single stage double entry pump is a horizontally split volute centrifugal pump, mainly used to handle clean water or liquids similar to water in physical and chemical properties, temperature not above 105
Sow系列單級雙吸泵系水平中開
蝸殼式離心泵，主要供輸送溫度不高於105的清水或理化性質類似於水的液
體。
The result of simulation proves our assumption. based on the algorithm of contacting lines of worm, this dissertation uses 3d discrete contacting lines to depict a worm surface
運用推導獲得的
蝸桿理論齒面方程，精確描述
蝸桿齒面的實際接觸線，將
蝸桿型面沿接觸線進行離散，獲得
蝸桿實
體的三維離散模型。
On the other hand, inhibitory areas of ftc could be abolished partially or completely during bicuculline application. these results showed that gabaergic inhibitory afferent projections to recorded neurons were activated by random resonance caused by weak noise in cochlea, which provided inhibitory input for sharpening frequency tuning and made neuron more precisely analyze sound signal near its bf. therefore, this experiment presented a possible evidence of cellular level for interpreting why human and animal could extract or capture sound signal of specific frequency from the environment with competing noise
說明山弱噪聲引起的耳
蝸隨機共振在_ _仁行傳入過程中可能激活了至所一記錄的jc神經元的gaba能抑制性神經迴路，這種gaba能抑制為銳化神經元頻率調諧提供了一種抑制性輸入，使ic神經元對靠近最佳頻率的頻率分析變得更為細致和精確，由於聲頻率是聲信號的重要參數和信息載
體，頻率調諧的銳化意味著對聲頻率分析能力增強，從而為解釋人們為什麼能從充滿噪聲的環境中捕捉或提取與行為學相關的信號提供了一種細胞水平的實驗證據。
Treatment of lumbar spondylolisthesis with posterior decompression, spinal fusion and rf pedicle screw spinal system
椎體間蝸柱骨水泥充填結合椎弓根釘內固定治療腰椎滑脫癥
