旁瓣
参考答案:
也叫付瓣。非主要通带。在组合的方向特性图及速度滤波的道间混波中多有应用。
Chinese new traffic rules in 2013 give more severe punishment to offenders compared with ______ carried out in previous years.
A.that
B.those
C.one
D.it
肝硬化产生腹腔积液最主要原因是()
A.白蛋白不足
B.血氨产生过多
C.脾大,脾功能亢进
D.门脉压力增高
E.长期便秘