我会一直拉着驾驶杆飞过基准标线，接下来我要蹬舵转向，从相反的方向飞回来，同时对准基准标线、保持住高度和速度。
I'll pull past the show line, and then I kick in top rudder to come back in the other direction to get locked on the show line, on altitude, on airspeed.
这种器件最有效地使用于调零和光束置中应用，目标通过保持平衡或调零信号来维护或监测光学器件的对准。
These devices are most effectively used in nulling and beam centering applications where the goal is to maintain or monitor optical alignment by keeping a balanced or null signal.
将空白的PO与供应商和对准他们保持在他们的仓库的备件，而不是。
Place blank PO with suppliers and align for them to maintain the spares in their warehouse instead.
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