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LIBRATION [2 records]
Record 1 - internal organization data 1998-10-19
Record 1, English
Record 1, Subject field(s)
- Foundry Practice
Record 1, Main entry term, English
- libration 1, record 1, English, libration
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record 1, French
Record 1, Domaine(s)
- Fonderie
Record 1, Main entry term, French
- balançage
1, record 1, French, balan%C3%A7age
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Répartition des surépaisseurs de matière d'une pièce brute de fonderie, préalable à l'usinage. 1, record 1, French, - balan%C3%A7age
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1985-02-08
Record 2, English
Record 2, Subject field(s)
- Astrophysics and Cosmography
- The Moon (Astronomy)
Record 2, Main entry term, English
- libration
1, record 2, English, libration
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
An oscillation in the apparent aspect of a secondary body (as a planet or a satellite) as seen from the primary object around which it revolves caused by the inclination of its axis of rotation, variations in its orbital speed, real irregularities in its rotation, or changes in the observer's position on the primary body ... 2, record 2, English, - libration
Record number: 2, Textual support number: 1 CONT
libration of the moon: The combination of four libration effects that causes parts of the side of the moon turned to the earth to be alternately visible and invisible so that as much as 59 percent of the moon's entire surface can be observed from the earth. 2, record 2, English, - libration
Record number: 2, Textual support number: 1 OBS
The Glossary of Space Terms, 1982, of the European Space Agency, p. 215, gives a broader definition of libration, describing it as a "periodic oscillation about a mean position as, for example, caused by perturbations." 3, record 2, English, - libration
Record 2, French
Record 2, Domaine(s)
- Astrophysique et cosmographie
- Lune (Astronomie)
Record 2, Main entry term, French
- libration
1, record 2, French, libration
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Balancement apparent de la Lune, par rapport à un observateur terrestre, qui fait que, malgré l'égalité des périodes de rotation de la Lune sur elle-même et de sa révolution autour de la Terre, la partie visible de la Lune est supérieure d'environ 1/10 à la moitié de la surface. 2, record 2, French, - libration
Record number: 2, Textual support number: 1 OBS
Le Recueil de terminologie spatiale, 1982, de l'Agence spatiale européenne, donne, à la page 215 une définition plus large de la notion de libration, comme suit : «Oscillation d'un astre ou d'un engin spatial autour d'une position moyenne. 3, record 2, French, - libration
Record 2, Spanish
Record 2, Textual support, Spanish
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