| 释义 |
survey line
Also with hyphen.
[f. survey n. + line n.2]
a. A line along which the measurements and observations are made in a survey.
1889G. W. Usill Pract. Surveying v. 139 The accuracy of a survey..will best be assured by arranging the survey-lines so that the offsets shall be as short as possible. 1930S. W. Perrott Surveying for Schools i. 3 It frequently happens that the group or groups of survey lines..do not form triangles. 1981J. Pettet Site Surveying & Levelling 9 Measurements can then be carried out between these points, or from the survey lines joining them, to complete the survey.
b. Dentistry. A line scribed on a cast of a tooth marking the place of greatest diameter with respect to the chosen line of insertion of the denture.
1949V. R. Trapozzano Comprehensive Rev. Dentistry xx. 565 Draw the labial of a mandibular molar and indicate a typical survey line. 1954Osborne & Lammie Partial Dentures vii. 80 If a carbon marking rod is substituted for the vertical plane and a tooth takes the place of the curved surface, then an actual line will be produced at the level of the maximum tooth bulge. This is known as the survey line. 1980R. W. Blakeslee et al. Dental Technol. xi. 271 The resultant survey line shows those hard and soft tissues over which the removeable partial denture must pass when it is placed and withdrawn by the patient. The survey line also shows the height of contour of each tooth. |