| 单词 | power pack |
| 释义 | > as lemmaspower pack power pack n. a unit for supplying power (also figurative); spec. (a) one for converting an alternating current (from the mains) to a direct current at a different (usually lower) voltage, and usually comprising a transformer, rectifier, and capacitor; (b) one combining a motor and pump, used for supplying power to hydraulic equipment. ΘΚΠ society > occupation and work > equipment > pump > [noun] > other types of pump bottom lift1778 rose pump1778 centrifugal pump1789 jack-heada1792 jet pump1850 sand-pump1865 Union pump1867 shell-pump1875 eductor1877 brake-pump1881 bull-pump1881 cam-pumpa1884 sand-reel1883 grasshopper1884 knapsack pump1894 knapsack sprayer1897 turbo-pump1903 Sylphon1906 slush pump1913 displacement pump1924 power pack1937 proportioner1945 solids pump1957 peristaltic pump1958 powerhead1981 Cornish pump- the world > matter > physics > energy or power of doing work > [noun] > source of energy or power > self-contained power pack1937 power package1958 the world > matter > physics > electromagnetic radiation > electricity > electric charge, electricity > [noun] > unit supplying power energizer1891 power pack1937 society > occupation and work > equipment > machine > machines which impart power > motor > [noun] > others gas motor1855 sun motor1864 servo motor1872 telemotor1880 power pack1937 linear motor1957 the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > transformer > [noun] > supplying power power pack1937 1937 Jrnl. Inst. Electr. Engineers 80 194/2 This is derived from two grid-controlled rectifier valves operated from a ‘power pack’ of the usual construction. 1967 Gloss. Mining Terms (B.S.I.) viii. 21 Power pack, a motor-pump combination for producing power for hydraulic equipment. 1971 J. Z. Young Introd. Study Man iv. 69 The mitochondria carry the respiratory enzymes, and are hence called the power packs of the cell. 1972 F. Bradbury Hydraul. Syst. iii. 43 In a large plant..the control desk and the power pack may be separated by some distance or may be installed in separate machinery spaces. 1973 Houston Chron. 21 Oct. 3/1 (advt.) Penske Road Race... It's big-time racing excitement in a box! With power pack, 2 cars and hand controls, 30-ft. of track. 2002 Tractor & Machinery Dec. 75/1 12V RoadStart Emergency Power Pack. Delivers 1000 Amps initial starting power. Starts up to 30 cars before recharging. < as lemmas |
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