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圆盘以恒定的角速度ω=40rad/s绕垂直于盘面的中心轴转动，该轴在y−z面内，倾斜角θ=arctan3/4。点A的矢径在图示瞬时为r=150i+160j−120kmm。求点A的速度和加速度的矢量表达式，并用v=Rω和an=Rω2检验所得结果是否正确。
Learning how to read a METAR can be tricky. Today we will offer you some easy-to-follow guidance and some practical examples.
It’s the last item of interest, airspace classes, that we’ll be discussing in this guide. How can I tell if airspace is controlled or uncontrolled? As a student drone pilot is going through his or her studies, learning how to read and to interpret airspace on a Sectional Aeronautical...
Check for NOTAMs (Notices to Airmen) and TFRs (Temporary Flight Restrictions) Secure Airspace Authorization (if required) If airspace authorization is required, make sure you’re ready to use LAANC to get instant approval If LAANC isn’t available, make sure you get approval via the FAA Dron...
README Apache-2.0 license SWIM FNS JMS Reference Implementation (FnsClient) Overview The System Wide Information Service (SWIM) Federal NOTAM System (FNS) Java Messaging Service (JMS) Reference Implementation (FnsClient) provides an example implementation on how to establish and maintain a local inst...
NOSTRA NOSU NOSUM NOSV NOSW NOSWA NOSWG NOT Not Yet Diagnosed NOT-DTN NOTA NOTACK NOTAFLOF NOTAL NOTAM NOTAMS NOTAP NOTAR NOTASIP NOTB NOTC NOTCam NOTD NOTDAW NOTE NOTED NOTEGA NOTEMPS NOTES NOTF NOTFA NOTG NoTHO NOTI ▼
Instead of spending an hour translating NOTAMs and METARs with a student asking, ‘What does this mean? What does that mean?’ and ‘I don’t understand that,’ we read the decoded weather briefings and ask more meaningful questions. The student is learning something important ...
Read each choice of the answers in advance.;Predict the topic of the news. ;Mark the signal words in the choices.;Forecast the question from the grammar structure of the choices.