# alternating point

- 交岔点

*English-Chinese lightIndusrty dictionary (英汉轻工业大词典).
2013.*

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**Alternating current**— (green curve). The horizontal axis measures time; the vertical, current or voltage. In alternating current (AC, also ac) the movement of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge … Wikipedia**Point De Grecque**— A ground work in needle point laces consisting of darned square motifs alternating with octagonal meshes … Dictionary of the English textile terms**Point groups in three dimensions**— In geometry, a point group in three dimensions is an isometry group in three dimensions that leaves the origin fixed, or correspondingly, an isometry group of a sphere. It is a subgroup of the orthogonal group O(3), the group of all isometries… … Wikipedia**Point Grey Secondary School**— Infobox Education in Canada name= Point Grey Secondary School imagesize= 250px motto= Honor Ante Honores streetaddress= 5350 East Blvd city= Vancouver province= British Columbia postalcode= V6M 3V2 areacode= 604 phone= 713 8220 fax= 713 8218… … Wikipedia**Alternating series**— In mathematics, an alternating series is an infinite series of the form:sum {n=0}^infty ( 1)^n,a n,with an ≥ 0 (or an ≤ 0) for all n . A finite sum of this kind is an alternating sum. An alternating series converges if the terms an converge to 0… … Wikipedia**Point Grey Mini School**— Infobox Education in Canada name= Point Grey Mini School imagesize= motto= streetaddress= 5350 East Boulevard city= Vancouver province= British Columbia postalcode= V6M 3V2 areacode= 604 phone= 713 8220 fax= email= url= schoolnumber= schoolboard … Wikipedia**Point Adams Light**— Infobox Lighthouse caption = location = south of Columbia Bar coordinates = coord|46.188333| 123.977778 yearlit = 1875 automated = yeardeactivated = 1899 foundation = probably brick cite web url = http://www.rudyalicelighthouse.net/NWLts/PtAdams/P… … Wikipedia**Covering groups of the alternating and symmetric groups**— In the mathematical area of group theory, the covering groups of the alternating and symmetric groups are groups that are used to understand the projective representations of the alternating and symmetric groups. The covering groups were… … Wikipedia**Automorphisms of the symmetric and alternating groups**— In group theory, a branch of mathematics, the automorphisms and outer automorphisms of the symmetric groups and alternating groups are both standard examples of these automorphisms, and objects of study in their own right, particularly the… … Wikipedia**Lefschetz fixed-point theorem**— In mathematics, the Lefschetz fixed point theorem is a formula that counts the number of fixed points of a continuous mapping from a compact topological space X to itself by means of traces of the induced mappings on the homology groups of X . It … Wikipedia**Phase Alternating Line**— Pour les articles homonymes, voir Pal. NTSC … Wikipédia en Français