在今年5月和本月初在加州举行的多项演示期间，无人机在不同高度飞行，链接分散在山区的手持式军用无线电设备。

During the multiservice demonstrations, held in California in May and this month, UAVs flew at a variety of altitudes while linking handheld military radios dispersed over mountainous regions.

youdao

在今年5月和本月初在加州举行的多项演示期间，无人机在不同高度飞行，链接分散在山区的手持式军用无线电设备。

During the multiservice demonstrations, held in California in May and this month, UAVs flew at a variety of altitudes while linking handheld military radios dispersed over mountainous regions.

youdao