- plover by Oscar Morgan
... where their clutch of eggs (usually four) are deposited. Both male and female share the duties of rearing the young. The crab plover ( Dromas ardeola. ) of India, Arabia, and E Africa, with its heronlike bill and webbed toes, is so distinct that it is placed in a family by itself, the Dromadidae. It derives its name from its habit of pounding crabs and mollusks to ...
- Monopulse Radar by Great Soviet Encyclopedia
... three radiation patterns (usually four) and a corresponding number of receiving channels.Combined phase-amplitude signal comparison is used for angular tracking of an object by determining its angular coordinates in two orthogonal planes with the aid of only two radiation patterns. Information describing the angular position of the object in one plane, such as ...
- Over by Webster's
... .) A certain number of balls (usually four) delivered successively from behind one wicket, after which the ball is bowled from behind the other wicket as many times, the fielders changing places.(prep.) Above, implying superiority after a contest; in spite of; notwithstanding; as, he triumphed over difficulties; the bill was passed over the veto.(prep.) Upon the ...