This paper puts forward the ways to improve SD-80 type belt conveyor main drum connecting structure. The way can raise one time transportation distance.

提出了改进SD— 80型带式输送机主传动滚筒的法兰联接结构的措施，使该带式输送机运距提高了一倍。

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Methods Using "random restless" testing method (a kind of relatively simple and reliable method of Y type maze) to test the learning and memory's ability of male SD rats in different age stages.

方法采用一种相对简便可靠的“随机不休息法”对不同年龄段雄性SD大白鼠进行Y -型迷宫测试。

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The technological requirement and bonding process for SC and SD type of cylindrical sleeves were introduced.

介绍了SC型和SD型筒形砂套技术要求及制作工艺。

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Ideal for viewing content from any source, the XBR-HX950 LED Internet TV includes the X-Reality PRO Engine, a two-chip digital video processor that optimizes any type of HD, SD or low-resolution Internet video.

ENGADGET: Sony sets US pricing for 55-, 65-inch HX950 HDTVs: $4,499 and $5,499