Stencil manufacturing techniques include chemical etching, laser cutting and electroforming.钢网制作技术包括化学腐蚀, 激光切割和电铸.Original plate: Relief printing plate produced bu 7 photomechanical etching as distinct from electrotyping...
一旦有了金属丝，我们就能把它卷成弹簧的形状。Once we have the wire, we can coil it up into the shape of a spring.很多 在线 测试固定装置是带有弹簧的探针或者采用真空启动的.Most in - circuit test fixtures use spring - loaded probes and are vacuum actuated.文中建立了空气弹簧的静态有限元模型...
Dengta marine built gypsum deposits occurred in Mantou Jianchang Formations, Lower Cambrian.灯塔海积石膏矿床赋存于下寒武统馒头组—碱厂组中.The Pre - cambrian alumino - siliceous slate is the host rock of antimony deposit inHunan.湖南前寒武系的 硅铝 质板岩...
Biosphere 2 was ultimately ridiculed as a research debade, as exfravagant pseudoscience.生物圈2号最终被讥讽为科研上的大失败, 代价是昂贵的伪科学.The entire biosphere was becoming more transparent.整个生物圈越来越透明。The impact of modern technology on the b...