| 释义 |
▪ I. poling, vbl. n.1|ˈpəʊlɪŋ|
[f. pole v.1 + -ing1.]
1. The action of the verb pole1 in various senses; furnishing or supplying with poles; the propelling of boats or canoes with poles; the stirring of a bath of copper, tin, or lead with a pole of green wood, to cause ebullition and deoxidation; etc.
1573Tusser Husb. (1878) 83 To arbor begun, and quick setted about, No poling nor wadling till set be far out. a1601[see pole v.1 5]. 1753[see pole v.1 4]. 1816Brackenridge Jrnl. Voy. Missouri in Views Louisiana 205 The water is generally too deep to admit of poling. 1842Civil Eng. & Arch. Jrnl. V. 169/2 The process of ‘polling’,..carried on by stirring..the copper while in a fluid state with poles of green wood. 1864Watts Dict. Chem. II. 29 If..the poling has been continued too long, the copper again becomes brittle,..in this state it is said to be overpoled.
2. concr. Poles collectively, as used for poling hops, or for lining the sides of a tunnel.
1842Francis Dict. Arts etc., Poling, the small boards supporting the earth during the formation of a tunnel. 1881Raymond Mining Gloss., Polings, poles used instead of planks for lagging.
3. attrib. and Comb., as poling-board, one of the boards used to support the sides in the excavation of a tunnel; poling boat N. Amer., = pole boat s.v. pole n.1 5 c; poling-ground, shallow water where poling or punting is possible.
1839Civil Eng. & Arch. Jrnl. II. 146/2 They frequently push the *poling boards before them. Ibid. 326/2 Each division..has boards in front..(known by the technical name of poling boards).
1900J. London Son of Wolf 163 Madelaine shook the dust of the Lower River from her moccasins, and with her husband, in a *poling-boat, went to live on the Upper River. 1973D. Andersen Ways Harsh & Wild ii. 70 We whipsawed lumber from birch logs and put together two large poling boats.
1901J. G. Millais in Daily News 8 Feb. 6/4 No puntsman should ever venture off *poling ground in Scotland when the wind is in the south.
▪ II. poling, vbl. n.2 Physics.|ˈpəʊlɪŋ|
[f. pole n.2 + -ing1.]
The process of polarizing a ferroelectric material (see pole v.2).
1954Jrnl. Appl. Physics XXV. 1166/2 The crystals..were grown in our laboratory and the c axis was made to be perpendicular to the face of the crystals by means of a high-field poling technique. 1965IEEE Trans. Sonics & Ultrasonics XII. 7/1 During the initial poling both 109°/71° and 180° domain switching occurs. 1976Ibid. XXIII. 393/2 The common practice..is to analyse the immittance behavior of a resonator with a certain geometry and poling axis. |