The structure and performance of a three-dimension movable target holder used in nuclear reaction experiments are described.
描述了遥控三维调变的核反应靶架及其控制器的结构与性能。
Three dimension welding shaping is a applied and low cost rapid prototyping technology. Shaping part has a good intensity and performance.
焊接成型技术是一种非常实用且制造成本低的快速制造方法，成型零件具有优良的强度和性能。
At low flow attenuation performance of semi-active muffler was computed respectively by using theoretical formula and three-dimension finite element method.
低速气流时，分别进行了半主动消声器的消声性能理论计算和三维有限元法数值计算。
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