Principal section

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(Crystallog.) a plane passing through the optical axis of a crystal.

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Each of the 101 verbs in the principal section of I verbi is integrated into a graphic depicting the verb.
Distribution of steel fibres in principal section and anchorage of fibre in concrete matrix is viewed differently by various authors [4, 7, 15, 16].
Each principal section of the novel (Du cote de chez Swann, A l'ombre des jeunes filles en fleurs, etc.
The principal section of MEDLINEplus is Health Topics, which is a collection of thousands of publications from the leading federal government medical agencies, including the National Institutes (Aging, Cancer, Mental Health, etc.
The dictionary section is the book's principal section.
Preceding each principal section is a brief introduction by the editor of the issues raised.
The principal section of this paper is the aptly-titled 'Witchcraft Themes in the Text of Celestina', in which Severin offers over five hundred and seventy lines of prose, including commentary of her own, references, quotations, and summary of the text, to accompany some seven hundred and thirty lines, in smaller type, of indented quotations from the dialogue text of Celestina.
The principal section of NCS contains detailed specs in 85 categories for each model.
In the first principal section, "Grundzuge der Musikanschanung von Weber und Berlioz," Heidlberger suggests a number of parallelisms in the critical writings of the two figures.
The principal section of the work, "Juke Box Music," contains the discographical entries, subdivided into "Commercial Releases," "Noncommercial Issues," and "Others.
Designed in a loosely Italianate style, it has an early 19th century core with the principal sections of the hall dating from the late Victorian era.
The extensive study which precedes the present catalogue opens with consideration of the Cathedral's ritual and musical practices and of the roles of polyphony within them, and thereafter is divided into two principal sections, the first concerned with the sources themselves and the second with the repertory which they contain.

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