| 释义 |
bottoming, vbl. n.|ˈbɒtəmɪŋ|
[f. bottom v. + -ing1.]
1. a. The action of putting a bottom to anything. b. The action of setting on a sure basis. c. concr. An under layer, a foundation.
1526MS. Acc. St. John's Hosp., Canterb., Payd for botomyng of a basket. 1642Rogers Naaman 179 So farre as may further him in the bottoming of the soule in mercy. 1646H. Lawrence Comm. Angells Table, Our hopes differ from others..in the bottoming of them by expectation. 1823McAdam Road-making 49 These previous beds of stone are called the bottoming. 1846McCulloch Acc. Brit. Empire (1854) II. 51 A road..with a foundation or bottoming of large stones.
d. attrib., as bottoming-hole, the open mouth of a glass-making furnace; bottoming-tap, a square-edged tap for cutting an internal thread uniformly to the bottom of a hole.
1839Ure Dict. Arts 582 This spheroid having become cool and somewhat stiff, is next carried to the bottoming hole. a1877Knight Dict. Mech., Bottoming-hole, the open mouth of a furnace at which a globe of crown glass is exposed during the progress of its manufacture, in order to soften it and allow it to assume an oblate form. a1884Ibid., Suppl., Bottoming tap, one for carrying the thread of full size to the bottom of the hole.
2. Austral. In mining, the process of reaching bed-rock. Cf. bottom v. 5.
1890‘R. Boldrewood’ Miner's Right I. vii. 189 The bottoming of three or more shafts on the supposed line of lead shall be a sufficient test.
3. Electr. See bottom v. 7. |