English translation for "发射前的直接时间计算"

final countdown

Similar Words：

"发射气球" English translation, "发射气象火箭" English translation, "发射前倒数时间计算" English translation, "发射前的" English translation, "发射前的系统校准" English translation, "发射前的最后检查和测试" English translation, "发射前地面检测设备" English translation, "发射前点火试验" English translation, "发射前发动机点火试验" English translation, "发射前飞机航向" English translation