We calculate the field distribution near focus of an aplanatic system for incident ASPBs with different polarization orders and initial azimuthal angles, and based on the simulation results, we find some unique focusing properties of the beams, such as ever on-axis energy null, strong longitudinal field, and flowerlike intensity distribution at focus.

計算了不同偏振級次和偏振初始角的軸對稱偏振光束當入射到無球差系統(tǒng)時在焦點附近的場分布，通過這些模擬結果色综合精品，發(fā)現(xiàn)了該光束一些獨特的聚焦特性，例如光軸強度始終為零、具有較強的軸向光場以及在焦點附近場呈現(xiàn)花瓣狀分布等国产1级在线视频网站免费。

The technical plan in the research on hand tractor attached driving disk plow is expounded with function analysis system technique.

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In respect to the relationship between cam profile and pressure angles, the design method of cam profile with constant pressure angle was discussed and the cam profile was derived by means of the Euler Formula and the FORTRAN program.

在討論了凸輪輪廓曲線與壓力角的關系的基礎上最新在线外国a，探討了等壓力角凸輪機構輪廓曲線的設計方法www。射，用改進型的歐拉公式經 FORTRAN編程得出相應的輪廓曲線91在线亚洲视屏，并著重分析了凸輪機構中基圓半徑、偏距和壓力角各參數的變化對凸輪輪廓曲線的影響国产精品无码三级在线播放一区。

Setting out the main way to coordinate, polar coordinate method, angle of law, such as tangent offset method.

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Because of the dependence of rotating dipole PA curve on layer of field lines, it avoids the degeneracy problem of conventional rotating vector model that all layers of field lines have the same PA curve with fixed inclination and impact angles, therefore it provides a useful way to identify the emission from different layers and constrain the location of emission regions in pulsar magnetosphere by fitting the observed pulsar radio PA data with rotating dipole PA curve.

其與磁力線層等參數的依賴關系避免了傳統(tǒng)旋轉矢量模型的簡并問題－在給定磁傾角和碰撞角情況下所有層磁力線的偏振位置角曲線都一樣，這為通過擬合射電偏振觀測數據來分辨不同層的輻射国产经典99久久不卡中国情侣，從而限定脈沖星輻射區(qū)部位提供了一條有用的途徑中文字幕第22页。

While for some indexes,such as length of medial longitudinal arch,length of lateral longitudinal arch,height of first metatarsophalangeal articulations,there is no longer changing with increasing load after adapting to a relatively lighter load.There is marked difference on the foot shapes between different items youth track man,especially for the throwers.Finally,five dimensions of foot morphological characteristics were found to establish the foot-shape-index-system,which are respectively metatarsophalangeal index,heel index,ankle index,arch of foot index and length of foot index,including 15 items.

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In view of the short duration in the test of a fuze's self-destruction time,we discussed the possible factors such as fuze structure and processing quality,the angle of fire,weather and barrel conditions.Meanwhile,we used the method of variance analysis to process significance test for different barrel conditions on the malfunctioning of fuze self-destruction.After eliminating some other possibilities,we retrieved the fired shell which has abnormal band with fin,and finally found the real cause of the problem mentioned above.

由一帶離心自毀機構引信自毀時間出現(xiàn)偏短的試驗結果出發(fā)，從引信結構參數和加工質量欧日韩一级片、射角日韩高清视频免费观看、氣象條件、身管狀態(tài)等方面入手国产黄色av入口，著重用方差分析法對身管狀態(tài)進行顯著性檢驗亚洲欧美日韩精品一区，探討引起引信自毀時間異常的因素，在逐一排除了其他因素后熟妇插穴网，通過射擊回收的方法發(fā)現(xiàn)彈帶有異常飛邊禁止18岁以下观看,黄片，找出了問題的原因。

Along with operations of the turning, sharpping, drilling, milling and grinding, some new methods, technologies and processings such as overlap workpieces, improved cutting tool formes, workpiece charmfer, adjustment of cutting parameters and others to restrain and decrease burrs in size are developed, which have noticeable theoretical significance and wide practical value in the precision cutting, FMS and automatic machining.

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The paper explains the basic operation of the new type of GPS 72, and emphasizes its application in forestry survey and planning and the use method of its interface setting, parameter setting, known coordinate storage, current place coordinate storage, spot navigation, primary navigation, area survey and declination survey.

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This paper presents the Machining Tool geometry of the former flank, the main flank, flank, the main cutting edge, Under the cutting edge tip cutting plane, the main section, the former Kok, horn, wedge angle edge angle, pointed knife, the blade angle, vice horn, Under the Frontier concept, the concept of cutting consumption, and the general circumstances of their choice method for processing slender shaft. cast iron materials, aluminum, stainless steel, rubber materials, plexiglass material, cloth bakelite materials, high temperature alloys, aluminum-magnesium alloy, hardened steel, the typical trapezoidal thread, the thread Triangle, Speaking at the trapezoidal screw thread pitch of the Tool geometry of the selection methods and cutting the amount of cutting fluids reasonable choice.

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