Production and development tendency 生产开发方向 ; 生产开发方向 ; 生产现状及发展趋势 development tendency prediction 发展趋势 ; 发展趋势预测 .
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This paper discusses production technique, development prospect of carbon nanotube, and research direction and new tendency at home also introduces.
本文对碳纳米管的生产技术、发展前景进行了论述，并阐述了国内碳纳米管的研究方向及最新动态。
The direct and indirect liquefaction technology can be used usually for petroleum production from coal. Its development tendency and industrial situation were discussed.
煤制油通常有直接液化和间接液化，论述了煤的液化合成液体燃料的开发趋势和工业化状况。
The current status of screw pump production, development tendency and producing principle of screw pump are summarily introduced in the thesis.
本文概括性地介绍了螺杆泵采油现状、发展趋势、螺杆泵的采油原理。
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