abbr.英联邦电信局（Commonwealth Telecommunications Board）；全面禁止核试验（Comprehensive Test Ban）；集线器终端缓冲器（Concentractor Terminal Buffer）；电视广播公司（Corporation for Television Broadcasts）
Experimental results indicate that the circuit does improve the index of CSO and CTB.
实验测试结果表明该电路能改善CTB、CSO指标。
2
The researchers observed that a specific type of boundary called a coherent twin boundary (CTB) has a double role in fracture mechanism.
研究人员发现一类被称作共格孪晶界（CTB）的特殊的晶界。
3
In this study, VP7 gene and CTB-VP7 fusion gene expression vectors were constructed, and a high-efficient genetic transfomation system of carrot(Daucus carota L. )