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71Norma Arm — Diagram of the Milky Way s spiral arms The Norma Arm is a minor spiral arm of the Milky Way galaxy extending from and around the central hub region of the Milky Way Galaxy.[1] The inner portion of the Arm is called Norma Arm in narrow meanin …
72DW-link — Diagram of the dw link suspension, as implemented on an Iron Horse Sunday, showing the location of the virtual pivot point The DW link is a subset of the common four bar system used widely in bicycle suspension. The four bar system has been used… …
73Metropolitan Goods railway line — Diagram of the Metropolitan Goods lines. The Metropolitan Goods Railway Line is a network of goods (or freight) railway lines in the suburbs of Sydney, Australia. Contents 1 …
74synaptic vesicles — small membrane bound structures behind a presynaptic membrane, containing neurotransmitters; when depolarization occurs they fuse with the presynaptic membrane and release the neurotransmitter into the synaptic cleft. Diagram of synaptic vesicles …
75Limit (category theory) — In category theory, a branch of mathematics, the abstract notion of a limit captures the essential properties of universal constructions such as products and inverse limits. The dual notion of a colimit generalizes constructions such as disjoint… …
76star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …
77Pawn structure — In chess, the pawn structure (sometimes known as the pawn skeleton) is the configuration of pawns on the chessboard. Since pawns are the least mobile of the chess pieces, the pawn structure is relatively static and thus largely determines the… …
78fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… …
79nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …
80climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …
