intro-造句
31, Causes of ineffectiveness of plastics extruder screw due to cracking are analysed, briefly intro- duces renovation by welding.
32, The equipment level of mill and innovation of production technology for plate in Japan were intro- duced.
33, The structure, working principle, measuring circuit and frequency characteristics of contact potential difference nondestructive testing equipment using fixed probe am intro- duced.
34, This web site includes the links to other database, such as: fibrovascular plant database, plant specimen, seed source, rare plant database and intro- seed database.
35, In this paper, the use of hypoxanthine in synthesis medicines and plant growth regulators is intro- duced briefly.
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