在移动德律风技巧中，2.5G和谈将2G系统扩展到供给诸如分组互换连接（GPRS） 的附加效用和更高的数据传输速度（HSCSD、EDGE）。
In mobile telephony, 2.5G protocols extend 2G systems to provide additional features such as packet-switched connection (GPRS) and enhanced data rates (HSCSD, EDGE).
这种方法零件的加工公差按装配精度要求的允许偏差放大若干倍，对加工后的零件测量分组，对应的组进行装配，同组可以互换。
In this method, the machining tolerance of parts can be enlarged several times according to the allowable deviation of assembly precision requirement.
这种方法零件的加工公差按装配精度要求的允许偏差放大若干倍，对加工后的零件测量分组，对应的组进行装配，同组可以互换。
In this method, the machining tolerance of parts can be enlarged several times according to the allowable deviation of assembly precision requirement.
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