Chromium slag treatment was the international environmental protection problem.
铬渣治理是国际性环保科技难题。
This paper deals with the PC series micro - computer software copy protection problem.
本文研究的是PC系列微机的软件防拷贝问题。
Against the protection problem of optical layer in WDM networks, two new protection algorithms are proposed.
针对WDM(波分复用)光网络光层保护问题,提出了两种新的保护算法。
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