高强度聚焦超声(H IFU)以其安全性、无创性、有效性的特点正日益成为治疗和辅助治疗多种肿瘤的新方法。
High intensity focused ultrasound (HIFU) is increasingly becoming a new non-invasive therapy for tumors for its safety and effectivity.
文中计算公式对于计算机辅助设计摄像管聚焦磁场是适用和方便的。
The calculating formulas in the paper are available and convenient for computer aided design of focusing magnetic field of camera tube.
后图形处理程序，计算程序的精度满足工程设计要求，是行波管周期永磁聚焦系统的良好辅助设计手段。
The accuracy of the calculating pro-grams meets the demand of engineering design, and is a good CAD tool for developing the TWT 'ppm focusing system.
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