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หรือคุณกำลังค้นหา deal
แกสแท้, แกสบริสุทธิ์
(english) A force considered to act along a single line in space. Concentrated forces are useful mathematical idealizations, but cannot be found in the real world, where all forces are either body forces acting over a volume or surface forces acting over an area.
แผ่นไม้กระดาษ ปกติมีความกว้างประมาณ 9 - 11 นิ้ว หนาประมาณ 2 - 4 นิ้ว
(english) An idealized concept meaning something which does not deform under loading. In fact, all objects deform under loading, but in modelling it can be useful to idealize very stiff objects as rigid.
(english) An idealization for analysis purposes of a real or conceived structure. A structural model includes boundaries limiting the scope of the analysis. Supports occur at these boundaries, representing things which hold the structure in place.