For a specific fire control dynamic performance test system, its measurement result was 2.34" by using the method, which improved angle precision from 20 to 5 arc-second."
Now their commanders say their fighters have managed to link up with a second front to the south of Misrata, creating a defensive arc around the city's southwestern flank.
现在，他们的指挥官称，现在战士们已经成功地连接起米苏拉塔南面另一条前线，在东南翼形成坚固的防线。
3
One second of arc movement is one thirtieth of a millimetre.