| 释义 |
solenoid|ˈsɒlənɔɪd, ˈsəʊlənɔɪd|
[a. F. solénoïde, f. Gr. σωλήν: see solen n.2]
1. Electr. An electro-dynamical spiral, formed of a wire with the ends returned parallel to the axis; a series of elementary circuits arranged on this principle.
1827J. Cumming Man. Electro Dynamics 240 In the case of a straight solenoïd (an electro-dynamic cylinder) θ is the angle between the axis of the solenoïd and the extremity of the cylinder. 1832Handbk. Nat. Philos., Electro-Magnet. xii. §270 (L.U.K.) 83 Collecting together a great number of similar helices..and uniting them in one mass. Such an arrangement is called by Ampère an Electro-dynamic Solenoid. 1881Nature XXV. 167 The main current is made to pass through a pair of concentric solenoids, and in the annular space between these is hung a solenoid. 1897Curry Theory Electr. & Magnetism 254 A number of elementary circuits placed at equal distances apart along any line with their planes at right angles to that line is called a solenoid.
2. Med. A kind of cage for containing a patient during medical treatment.
1901Brit. Med. Jrnl. No. 2092 Epit. Med. Lit. 19 The subject was seated in a large solenoid or cage, and expired through a gasometer. 1903Ibid. No. 2203. 654 The successful treatment of diphtheria and tetanus within the solenoid.
3. attrib. and Comb., as solenoid-operated adj.; solenoid brake, a brake actuated by the movement of a core into or out of a solenoid when an electric current is passed through the latter; similarly solenoid lock.
1914Machinery Dec. 328/1 A new automatic solenoid brake for crane, hoist, lift bridge and similar service has recently been developed. 1963Jones & Schubert Engin. Encycl. (ed. 3) 1168 One type of solenoid brake adapted for mill, crane and hoist motors and similar classes of service, is so arranged that the brake mechanism is held in the off or release position by a coil and plunger. 1976L. Deighton Twinkle, twinkle Little Spy iv. 41 The glass door..had an electric solenoid lock. I had to push the override.
1956Nature 14 Jan. 84/2 Two solenoid-operated valves are incorporated in the flow line. 1971Jrnl. Gen. Psychol. LXXXIV. 325 The four match stimuli were presented by the second projector through a solenoid operated shutter which varied exposure duration. |
