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发帖数: 1061 | 1 http://www.apcrystal.com/_content/portfolio/KBBF.pdf
In 2009 the PRC, realizing the strategic significance
of KBBF, halted the external distribution of the crystal. In collaboration
with Clemson University, Advanced Photonic Crystals (APC)
has developed a U.S. patented hydrothermal crystal growth process to produce
the KBBF crystal here in the United States, becoming the nation’s only
domestic source of this strategic material. The samples evaluated and tested
to date have demonstrated
that APC’s KBBF crystals are comparable to, and in many parameters exceed,
the quality of the Chinese equivalents, and they can be
produced at significantly lower cost.
这美帝“打破国际封锁”的八股文写起来也是熟门熟路啊 |
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