涡流二极管泵输送设备是一种新型的用于高危物料输送的无运动部件的免维修输送系统。
Vortex diodes pump is a new-type maintenance-free equipment with no moving parts for pumping hazardous liquids.
阐述了国内外免清洗焊剂和无铅焊锡膏的研究现状及其在电子组装技术中的应用前景。
The research on and the application in the electronic assembly technology of the two materials are reviewed.
无线及免电池的专利，压力敏感的笔和无障碍灵巧的鼠标（无球或光学部件）。
The patented, pressure-sensitive pen and hassle-free ambidextrous mouse (with no ball or optical parts) are both cordless and battery-free.
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