Workers at the space center examined the launch area.
工人在航天中心的发射研究领域。
Since then, engineers have tracked vultures as a routine part of launch by taking pictures of the launch area from two different angles.
从那时起,工程师通过从发射场的两个不同角度拍摄照片跟踪秃鹫成为了发射过程中例行公事的一部分。
Regardless of type NPN or PNP-type tubes, the internal transistor has three areas, namely, the launch area, base, collector area, the three areas form two PN junction.
无论npn型还是PNP型管,三极管内部均有三个区、即发射区、基区、集电区,三个区形成两个PN结。
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