采用激冷斜槽法和低过热法进行浇注料坯的试验，在试验中研究了不同浇注温度和冷却板倾斜角度对所浇注料坯的微观组织的影响。
The experience was conducted using cooling slope and low superheat processes, effects of pouring temperature and the degree of slope on the billet's structure were researched.
介绍了一种适用于球阀、蝶阀和旋塞阀的斜槽插板升降撑拢式阀门密封结构。
A kind of slope slots and embeded plates hoisting expanding type valve sealing mechanism which is suitable for ball valves, butterfly valves and plug valves is introduced.
介绍了一种适用于球阀、蝶阀和旋塞阀的斜槽插板升降撑拢式阀门密封结构。
A type of dual slots helix hoisting composite valve switch mechanism which is suitable for ball valves, butterfly valves and plug valves is introduced.
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