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The main research as follow: gradually open line,in which a small segment adopted to draw straight line to matching;the key points,at which gradually open polar coordinate calculation is adopted;there are two kinds of situation should be considered in the outside wheel gear;in order to keep enough place for revolving angle,repla...

研究工作包括：渐开线采用小段直线的拟合；关键点采用渐开线公式的极坐标形式计算；外齿轮齿廓渐开线要考虑两种情况的生成；外齿轮上以作用力的方式代替转距以保证在节点处啮合外齿轮所要旋转的角度；用ANSYS软件仿真了几组不同的情况，并将仿真结果与理论计算结果进行比较，结果表明所用理论方法和所建模型的正确性。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

In actuator unit, the demand of parameters is analyzed, and it is brought forward that electric magnet is adopted as actuator, thermal resistance thread is adopted as cutter, and 5×5 cutter matrixes work synchronously for cutting the plastic film on each seedling.

在执行单元设计上，分析了其性能参数要求，提出利用电磁铁作为执行器，通电加热的电阻丝作为切破刀具，采用5×5的刀具矩阵同时动作使得电磁铁在动作时间内能处理每株棉苗上方的地膜。

The fore bay of Heihe Longhui Hydropower Station designed by the company, is the existing biggest tunnel fore bay in China, which is height of 21m, width of 16m; for the large-span dome of surge tank of Baishuijiang Shiji Hydropower Station, which is the first project equipped with rapid-drop gate in surge tank in Gansu Province, the company adopted pre-stressed anchor cable to complete the dome's excavation and supporting at the same time, thus reduced the completion period and investment; for the diversion tunnel of Fuchuan Hydropower Station, which is the biggest non-pressure diversion tunnel in Gansu Province, with span of 9m, height of 11m, the company adopted half-tunnel supporting structure, thus reduced the project investment.

黑河龙汇水电站前池是目前国内最大的洞内式前池，跨度16m、高度21m；白水江石鸡水电站调压井大跨度穹顶采用预应力锚索技术，分瓣开挖一次支护完成，节省了工期和造价，同时是省内第一座在调压井内设置快速闸门的工程；福川水电站引水隧洞是甘肃省内最大的无压引水隧洞，跨度9.0m，高度11m，采用半洞支护结构，在满足安全的前提下节省了工程投资。

The article intrduces that in the construction of the 5th section of Chengdu third circle road,the exisited underground pipes cross over the trench,to secure the pipes,a method of narrow excavation were adopted,and to support the slope of the trench,anchor gunited supporting were adopted.

介绍了成都三环路西五段 A标成黄路口市政深沟槽横穿已埋地下管线，采用窄槽开挖，窄槽边坡加固用喷锚网支护的设计与施工技术方法，通过沟槽边坡变形监测反馈于设计并指导施工获得了成功，为市政深沟槽跨越类似管线积累了丰富的设计与施工经验。

For the floating body with complex bow and stern, the molded line reconstruction method is adopted to generate the section lines on the bow and on the stern which are necessary to construct the wetted surface, and it can raise efficiency greatly that the intersection lines of intersection structures are obtained by the way of combining modeling tool and NURBS technology; then the patch representation method is adopted in generating the mesh of wetted surface and interior free surface, and the velocity potentials on them are expressed separately, on basis of which the irregular frequency effect is dealt with in the calculation of hydrodynamic coefficients.

对于有复杂首尾结构的浮体，用型线重构的方式在首尾生成曲面构成所需要的截面线，将通用建模工具和NURBS曲线拟合相结合，生成相贯结构的相交线；然后，用分片法生成浮体湿表面及内自由面网格，并独立表达各自的速度势以处理不规则频率现象，进而进行水动力系数计算。

In the process, group A adopted strength training method similar to the characteristics of short-running muscle working , and group B adopted the traditional strength training method which is mainly to carry barbell.

训练中实验组采用与短跑肌肉工作特点相似的力量训练手段，对照组采用传统的以杠铃负重为主的力量训练手段。

In primary screw, electrical spanner, pneumatic spanner and hand torque spanner can be adopted; while in final screw, electrical spanner will be adopted.

初拧可用电动扳手、风动扳手或手动扭矩扳手；终拧多用电动扳手，如空间狭窄时，也可用手动扳手进行终拧。

It indicated the out-of-line between sanitation development and civil economic development. The current system didnt confirm the concrete payment mode adopted by the basic medical insurance. Except for few cities , most cities still adopted the fee-for-service mode which has already been validated irrational by international experience.

而现行制度没有确定基本医疗保险所采用的具体支付方式，除了少数的城市外，大多数的城市还是以按服务项目付费为基础向提供者进行支付，而按服务项目付费(FEE-FOR-SERVICE)已经被国际经验证明是一种极容易导致费用不合理支出的支付方式。

Ancient Romans dedicated the sixth day of the week to their beautiful, but vain, goddess Venus, so, when the Norsemen adopted the Roman method of naming days, they naturally adopted Venus as their name for the sixth day of the week.

古罗马人把每周的第六天奉献给他们崇拜的女神维纳斯，因此古代斯堪的纳维亚人在采用罗马人给日期命名的方式时，他们很自然地将维纳斯作为每周第六天的名称。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。