Keep off the roadway if you see or hear the approach of ambulances , fire engines , police or other emergency vehicles with their lights flashing or their two - tone horns or sirens sounding
32.
Its longish hood and two - tone interior cloak a responsive chassis that incorporates a fully independent suspension and rack - and - pinion steering , tuned to handle everything from rough pavement to highway curves
33.
Results are given for a series of two - tones inter - modulation distortion measurements and the im3 is 48dbc . it is shown that a 24db improvement in the inter - modulation margin can be achieved when the amplifier �� s output is 49dbm . and the efficiency of the whole system is 27 . 8 %
34.
Two - tone horns and sirens , white , red or blue flashing lights are used by ambulances , fire engines or police and other authorized organizations in emergencies to warn of their presence and signal their right of way . drivers must give way to emergency vehicles signalling their right of way
35.
Vector modulators have been used in this paper to vary the phase and amplitude of signals in the in - band spurious cancellation loop of feed - forward power amplifiers ( ffpa ) . in the two - tone test , 3 . 5ghz ffpa developed in this paper shows more than 35db improvement in the third - order inter - modulation ( im3 ) , offers approximately - 60dbc im3 output , achieves the expected goal , and meets the communication requirement
36.
Corticofugal modulation of frequency tuning of inferior collicular neurons in big brown bat , eptesicus fuse us chinese science bulletin , 2000 in order to explore the possible mechanism of corticofugal modulation of excitatory frequency tuning curves ( eftcs ) of midbrain neurons , we examine the change of sharpness , frequency - intensity response area , minimum threshold of both eftcs and inhibitory frequency tuning curves ( iftcs ) of inferior coliicular neurons during corticofugal modulation using two - tone inhibition paradigm and micro - electrical stimulation technique
37.
In order to verify memory effects of nonlinear power amplifier ( pa ) and to design and optimize pa with reducing memory effects , this paper analyzes existence of electrical and thermal memory effects with different tone spacing two - tone input signal and modulated signal source through mathematical derivation and advanced design system ( ads ) software simulation , and presents a method which can optimize pa with memory effects
38.
Customers can acquire variety of fabrics in hoi shing fabrics , and our leading fabric chains is two - tone . this produce is soft and smooth to the touch , it is colourful , bright and dazzling , and have variation tone in different angles , which is an ideal material for evening dress and wedding dress
