拉伸
参考答案：
指子波的伸缩变化。正常时差校正所引起的子波波形变化。
_What did he say on the phone just now
_ He suggested that we ______ a good rest.
A．would have
B．have
C．had
D．had had
110kV绕组匝绝缘厚度为1.35mm，所包的匝绝缘电缆纸厚度及层数为0.08mm、8层
