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单词 principal axis
释义

principal axis in British English

noun
1. 
the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror
2. 
any of three mutually perpendicular axes about which the moment of inertia of a body is maximum

principal axis in American English

noun
1. Optics
a line passing through the center of the surface of a lens or spherical mirror and through the centers of curvature of all segments of the lens or mirror
2. Physics
one of three mutually perpendicular axes of a body about which the moment of inertiais maximum or minimum
Word origin
[1875–80]This word is first recorded in the period 1875–80. Other words that entered Englishat around the same time include: massage, neoclassic, pressure point, slime mold, weekender

Examples of 'principal axis' in a sentence
principal axis

Principal axis factor analysis was used to explore concern domains.
Valérie Pittet, Carla Vaucher, Florian Froehlich, Bernard Burnand, Pierre Michetti,Michel H Maillard 2017, 'Patient self-reported concerns in inflammatory bowel diseases: A gender-specific subjectivequality-of-life indicator.', PLoS ONEhttp://europepmc.org/articles/PMC5302448?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Structural validity was evaluated by factor analysis (principal axis factoring).
Marceline C. Willekens, Don Postel, Martin D. M. Keesenberg, Robert Lindeboom 2018, 'Dutch Translation and Validation of the Headache-Specific Locus of Control Scale (HSLC-DV)',Pain Research and Managementhttp://dx.doi.org/10.1155/2018/3046235. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We standardize the plantar impulse by defining a principal axis of plantar impulse.
Yifang Fan, Yubo Fan, Zhiyu Li, Tony Newman, Changsheng Lv, Yi Zhou 2013, 'Screening Method Based on Walking Plantar Impulse for Detecting Musculoskeletal Senescenceand Injury', PLoS ONE10.1371/journal.pone.0083839. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
A principal axis factor analysis was conducted with 41 items using oblique rotation (promax).
Kelley Strohacker, Rebecca A. Zakrajsek 2016, 'Determining Dimensionality of Exercise Readiness Using Exploratory Factor Analysis',Journal of Sports Science and Medicinehttp://www.jssm.org/researchjssm-15-229.xml.xml. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
A principal axis factoring was conducted on the 32 variables with orthogonal rotation (varimax).
Arto O. Salonen, Jani Siirilä, Mikko Valtonen 2018, 'Sustainable Living in Finland: Combating Climate Change in Everyday Life', Sustainabilityhttp://www.mdpi.com/2071-1050/10/1/104. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Principal axis factoring found one factor, with 60% variance being explained.
Ben M. F. Law 2012, 'Psychometric Properties of the Existence Subscale of the Purpose in Life Questionnairefor Chinese Adolescents in Hong Kong', The Scientific World Journalhttp://dx.doi.org/10.1100/2012/685741. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
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更新时间：2025/2/3 11:35:59