| 释义 |
up-down
基本例句
adj.升降
And lastly, the thing is pretty heavy, so it would have not“ swooshability” with young kids, especially when the wings are up-down.
最后，这东西很重，对小孩子来说不合适，尤其是机翼处于上下位置时。 lelezhen
In practical radar systems, up-down stepped frequency signal is usually adopted to overcome the sensitivity to velocity of the normal stepped- frequency signal.
在实际雷达系统中，通常采用正负频率步进信号代替常规频率步进信号，以解决该体制对速度的敏感性。 cnki |