Tapered roller bearings, Deep groove ball bearings, Angular contact ball bearings, Self-aligning ball bearings, Thrust bearings, Spherical roller bearings,Single row cylindrical bearings, Pillow block bearings etc.

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The main products include deep groove ball bearing, variation core roller bearing, cylinder roller bearing, british system bearing, variation core ball bearing, double row deep groove ball bearing, pillow block bearing, corner touch bearing, trust roller bearing, tapered roller bearing, and spherical roller bearing.

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The input method of multi-scale data and three levels data index are investigated, a new own idea about how to represent multi-scale seamless data is advanced. The viewpoints that seamless GIS is looked on surface of globe reference ellipsoid as spatial information positioning standard and looked on geographic coordinates as reference of spatial data storage are explored, and based on reference ellipsoid surface coordinate, the measurement model of distance, azimuth angle and area are given.(4) The flowchart of data production of seamless GIS is analyzed, on the basis of the program algorithm and the interactive processing of feature adjoining relation, the data production method of seamless GIS is discussed.

研究了無縫GIS多格式、多比例尺空間數(shù)據(jù)入庫的模式91自拍视频国产精品，創(chuàng)新性地提出了用數(shù)據(jù)中間件模式解決GIS多源空間數(shù)據(jù)無縫集成的新方法久久青草国产精品一区，研究了多比例尺數(shù)據(jù)入庫的方法和三級索引機(jī)制，并對無縫GIS數(shù)據(jù)的多尺度表示提出了自己的看法2021最新国产理论；闡述了無縫GIS以地球橢球面為空間信息定位的參考面人人操人人干人人爱人人做、以地理坐標(biāo)進(jìn)行空間數(shù)據(jù)存儲的觀點(diǎn)，并給出了在橢球坐標(biāo)系下的距離尤物视频欧美性爱、方位角和面積度量模型一级大黄片欧美性爱。

Its theory is based on spherical astronomy and error theory, the main research on the ground coordinates of the points and ground connections between two points, the determination of the azimuth principle, measurement method, calculation method of operating procedures and go.

它的理論基礎(chǔ)是球面天文學(xué)和誤差理論，主要研究地面坐標(biāo)點(diǎn)和地面兩點(diǎn)之間連線的方位角的測定原理第一中文字幕AV在线、測定方法一级夫妻生活a片在线观看、操作程序和歸算方法。

For the axicons with 20 mm radius, 10-2 cone angle, when using incident spherical wave whose radius of curvature varius from 1200 mm to 1400 mm, the focal length increases from 200 mm to 120 mm and the lateral intensity distribution increases only 15μm.

對于半徑20 mm中文欧美福利，錐角θ=1×10－2的圓錐透鏡大家操大家日超碰，采用曲率半徑為1200~1400 mm的球面入射波，可擴(kuò)展焦深200 mm到120 mm亚洲网络在线，光強(qiáng)的均勻性有明顯改善久久精品视频大全，橫向場能量分布形狀改變量不超過15 μm手噜国产，完全達(dá)到應(yīng)用要求。

These quantities are used to characterize the spherical geometry of subpoints.

定義了用于刻畫衛(wèi)星星下點(diǎn)球面幾何特征的兩個指標(biāo)：平均星間角距和星下點(diǎn)分布面積日韩三级黄片。

By using a reflective spherical mirror with large numerical aperture, the light scattered by individual particles is collected over a large angular range of 20° to 160°.

散射光收集系統(tǒng)為單一大數(shù)值孔徑的球面反射鏡精品国产污污的网站，其對粒子散射光的收集角范圍從20°到160°。

Angular exported, but can prove that the proposed formula is applicable to any spherical triangle .

角形導(dǎo)出的一级A片自慰超刺激无码，但是能夠證明所得公式適用于任何球面三角形小18箩利洗澡无码视频网站。

The four-part formula gives the relation between two angles and the two sides adjacent to them around the spherical triangle.

四鄰公式為環(huán)繞球面三角的兩邊及兩角關(guān)系式。

The selection and orientation of the reference spheroid; the astronomical observation system; length standard; the computation of deflection of vertical and height anomaly; the problem of adjustment carried out on the spheroid;the treatment of Laplace arimuth in adjustment...

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