(A)焦点模糊（focal spot blur） (B)焦点尺寸（focal spot size） (C)双焦点（double focal spots） (D)焦点比例（focal spot ratio） 18 就阳极靶而言，一般会以钨铼合金做为材料，其中加入少量铼（Re）的目的为何？
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双焦点眼镜 Bifocal eyeglasses ; bifocal glasses ; bifocal spectacles ; divided spectacles
双焦点管 Dual-focus tube ; focus tube ; double focus tube
双焦点透镜 bifocal lens
双焦点的 bifocal
双焦点镜片 ultex ; bifocal lens
双焦点X射线管 double-focus X-ray tube ; ray tube
双焦点干涉仪 double-focus interferometer
熔合双焦点透镜 fused bifocal
整块双焦点镜 ultex
本文介绍了对激光双焦点技术的研究结果。
The result of research on laser dual foci technique is presented.
固定阳极，双焦点，桥式硅整流，油浸自冷组合式。
Stationary anode, double focus, and bridge silicon rectification, The X-ray generator is an oil-immersed self-cooled unit.
报道了单池单焦点及单池双焦点两种情况下的受激布里渊散射相位共轭度。
This paper reports on the fidelity of Stimulated Brillouin Scattering of single cell with one focus (SCOF) and single cell with two focuses (SCTF).
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