科学参考-科学技术类参考文献及词汇Science Reference

科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

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2	20	2:1	2:1	2:1
218–219 MHz Service	22	23B+D	23B+D	24
256-QAM	2.5 Gbps	2.5 Gbps	2.5 Gbps	2.5G (Two point Five Generation)
26	28	2B1Q (2 Binary 1 Quaternary)	2B+D	2 Binary 1 Quaternary (2B1Q)
2 cps, 2 Hz	2G (2nd Generation)	3	30	30B+D
30B+D	32	34	36	38
3 cps, 3 Hz	3G (3rd Generation)	3GPP	3GPP2	3GPP (3rd Generation Partnership Project)
3rd Generation Partnership Project (3GPP)	+3V	-3V	+3V	-3V
+3V	-3V	3x	4	40
419 Advance Fee Fraud	42	4B3T (4 Binary 3 Ternary)	4B/5B (4 Bits/5 Bits)	4 Binary 3 Ternary (4B3T)
4-level pulse amplitude modulation (4 PAM)	4 PAM (4-level Pulse Amplitude Modulation)	5	500 Service	512-QAM
512-QAM	6	64B/66B	64B/66B	64-QAM