- 行业: Earth science
- Number of terms: 93452
- Number of blossaries: 0
- Company Profile:
Founded in 1941, the American Congress on Surveying and Mapping (ACSM) is an international association representing the interests of professionals in surveying, mapping and communicating spatial data relating to the Earth's surface. Today, ACSM's members include more than 7,000 surveyors, ...
That bank of a stream or river which is to the left of the observer when he is facing downstream.
Industry:Earth science
A corner accessory that can be readily identified by its distance and direction from the corner being recorded.
Industry:Earth science
A statement or declaration reduced to writing and sworn to or affirmed to before some officer who has authority to administer an oath or affirmation.
Industry:Earth science
A condition equation expressing the relationship between the sum of the measured angles of a closed figure and the theoretical value of that sum, the unknowns being the corrections to the measured angles used in the adjustment. Sometimes called a triangle equation. An angle equation is used to make the sum of the three observed angles of a triangle, with corrections applied, equal to 180° plus the spherical excess of the triangle.
Industry:Earth science
A barometer in which atmospheric pressure is balanced against the weight of a column of mercury. There are two types of mercurial barometer, differing in the form of apparatus used but not in the underlying principle - the cistern barometer and the siphon barometer (q. V. ).
Industry:Earth science
The central line of an optical device as defined by the surfaces on which the device rests, i.e., where the optical axis of the device ought to be.
Industry:Earth science
That part of an acre of newly subdivided land remaining after dedication for streets, sidewalks, parks and so on.
Industry:Earth science
A plane angle both of whose sides can be included within the sides of a right angle. Its size is less than 90° (100g or <font face = symbol>p</font>/2 radians).
Industry:Earth science
(1) The rising ground bordering a sea, lake, or river. (2) (surveying) The continuous margin, along a stream, where all vegetation characteristic of dry land ceases. The right bank of a stream is to the right and the left bank to the left as one faces downstream. (3) A more or less flat topped, elevated feature over which the depth of the water is relatively small, but is sufficient for navigation at the surface.
Industry:Earth science
