“Yu Changxuan”的概念、定义、翻译、参考文献-科学参考

单词	Yu Changxuan
释义	Yu Changxuan Encyclopedia 理学物理学史释 Yu Changxuan俞昌旋（1941-07-07～2017-05-23）中国等离子体物理学家。生于印度尼西亚爪哇岛安褥埠，卒于安徽合肥。籍贯福建福清。
随便看	drilling technical parameters drilling technology drilling theory drilling time drilling time curve drilling time logging drilling tool drilling tool bypass valve drilling tool weighting scale drilling workload index drillion drill pipe drillpipe drill pipe power tong drill pipe sticking drill plough drill rig drill rigs for soil mixing wall drill rod drill seeder drill stem test drill string drill string non-return valve drill-string stabilizer drill string test

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