The main products: cast steel, stainless steel, cast iron, rubber seal, manual, electric, pneumatic, worm transmission.

主要产品：铸钢、不锈钢、铸铁、橡胶密封、手动、电动、气动、蜗轮传动。

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Worm transmission, convenient to switch from manual to pneumatic mode, it is installed between operation organ and valve.

蜗杆传动，手动气动切换方便。安装地执行装置与阀门之间。

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With facing object's frame structure, to describe knowledge and to build knowledge storage of worm transmission are introduced.

采用基于面向对象的框架结构来对蜗杆传动知识进行描述，并构造了蜗杆传动的知识库。

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The next goal with Guinea worm is to stop transmission of the parasitic disease in southern Sudan, which reported 2, 690 cases in 2009.

CNN: Guinea worm a greater challenge than smallpox

These are the only four countries that still have transmission of Guinea worm.

CNN: Rare tropical disease close to eradication