Betekenis van:
wave number

Voorbeeldzinnen

1. Sequence number of the wave
2. Sequence number of the survey wave
3. A sufficient number of tests in different wave trains is necessary to ensure statistical reliability, i.e. the objective is to determine with a high degree of confidence that an unsafe ship will capsize in the selected conditions.
4. Digital integrated circuits, other than those described in 3A001.a.3. to 3A001.a.10. and 3A001.a.12., based upon any compound semiconductor and having any of the following: a. An equivalent gate count of more than 3000 (2 input gates); or b. A toggle frequency exceeding 1,2 GHz; 12. Fast Fourier Transform (FFT) processors having a rated execution time for an N-point complex FFT of less than (N log2N)/20480 ms, where N is the number of points; Technical Note: When N is equal to 1024 points, the formula in 3A001.a.12. gives an execution time of 500 μs. b. Microwave or millimetre wave components, as follows: 1. Electronic vacuum tubes and cathodes, as follows: Note 1: 3A001.b.1. does not control tubes designed or rated for operation in any frequency band which meets all of the following characteristics: a. Does not exceed 31,8 GHz; and b. Is "allocated by the ITU" for radio-communications services, but not for radio-determination. Note 2: 3A001.b.1. does not control non- "space-qualified" tubes which meet all of the following characteristics: a. An average output power equal to or less than 50 W; and b. Designed or rated for operation in any frequency band which meets all of the following characteristics: 1. Exceeds 31,8 GHz but does not exceed 43,5 GHz; and 2. Is "allocated by the ITU" for radio-communications services, but not for radio-determination. a. Travelling wave tubes, pulsed or continuous wave, as follows: 1. Operating at frequencies exceeding 31,8 GHz; 2. Having a cathode heater element with a turn on time to rated RF power of less than 3 seconds; 3. Coupled cavity tubes, or derivatives thereof, with a "fractional bandwidth" of more than 7 % or a peak power exceeding 2,5 kW; 4. Helix tubes, or derivatives thereof, with any of the following characteristics: a. An "instantaneous bandwidth" of more than one octave, and average power (expressed in kW) times frequency (expressed in GHz) of more than 0,5;