英语词汇“parabolic reflector”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

parabolic reflector n. a reflector for light, sound, radio waves, etc., made in the form of a paraboloid of circular cross-section so as to reflect parallel rays to a focus, or produce a parallel beam from a source at the focus.

ΚΠ

1826 Philos. Trans. (Royal Soc.) 116 328 A large plano-convex lens..being substituted for a parabolic reflector.

1899 G. Marconi in Jrnl. Inst. Electr. Engineers 28 274 Should it be necessary to direct a beam of rays in one given direction I prefer to use an arrangement similar to a Righi oscillator placed in the focal line of a suitable cylindrical parabolic reflector.

1962 A. Nisbett Technique Sound Studio i. 23 An assembly consisting of a cardioid or omnidirectional microphone fitted at the focus of a parabolic reflector is also strongly directional.

1986 G. Langley Telecommunications Primer (ed. 2) xxiii. 70 A parabolic reflector (often called a dish) can be used to provide a very directional high-gain antenna with the radio energy concentrated into a parallel beam.

单词	parabolic reflector
释义	> as lemmas parabolic reflector parabolic reflector n. a reflector for light, sound, radio waves, etc., made in the form of a paraboloid of circular cross-section so as to reflect parallel rays to a focus, or produce a parallel beam from a source at the focus. ΚΠ 1826 Philos. Trans. (Royal Soc.) 116 328 A large plano-convex lens..being substituted for a parabolic reflector. 1899 G. Marconi in Jrnl. Inst. Electr. Engineers 28 274 Should it be necessary to direct a beam of rays in one given direction I prefer to use an arrangement similar to a Righi oscillator placed in the focal line of a suitable cylindrical parabolic reflector. 1962 A. Nisbett Technique Sound Studio i. 23 An assembly consisting of a cardioid or omnidirectional microphone fitted at the focus of a parabolic reflector is also strongly directional. 1986 G. Langley Telecommunications Primer (ed. 2) xxiii. 70 A parabolic reflector (often called a dish) can be used to provide a very directional high-gain antenna with the radio energy concentrated into a parallel beam. extracted from parabolicadj.n. < as lemmas
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> as lemmas