| 单词 | level lines |
| 释义 | > as lemmaslevel lines 2. Lying in a plane coinciding with or parallel to the plane of the horizon; horizontal; perpendicular to the plumb-line. level lines (Shipbuilding): see quot. 1850. ΘΚΠ the world > space > relative position > horizontal position or condition > [adjective] even1340 flatc1440 level1559 horizontal1638 1559 W. Cuningham Cosmogr. Glasse 137 Placing your Instrument (which I name a Geographicall plaine Sphere) Flat, and levell. 1669 S. Sturmy Mariners Mag. v. 70 The first..graze of the Bullet on the Level-Line, or on the Ground called the Horizontal Plain. 1679 J. Moxon Mech. Exercises I. vii. 126 When the Level is set flat down upon the work, the work is Level. 1728 E. Chambers Cycl. (at cited word) The Screw..is for raising or lowering the little Fork carrying the Hair, and making it agree with the Bubble of Air when the Instrument is level. 1850 J. Greenwood Sailor's Sea-bk. 129 Level lines. Lines determining the shape of a ship's body horizontally, or square from the middle line of the ship. 1860–4 Dict. Archit. (Archit. Publ. Soc.) (at cited word) As applied to a line, this word means any which lies at right angles to one drawn to the centre of the earth, or to a plumb line; or any line which is parallel to the horizon. As applied to a plane, the term ‘level’ signifies any in which all lines drawn in any direction are level lines as before defined. < as lemmas |
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