INERT
发表于 2025-3-23 09:58:42
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神圣在玷污
发表于 2025-3-23 17:45:12
Introduction and some Ergonomics,e observations relevant to a current need. Examples of each are the transistor, the electric light bulb, the Bessemer converter and the Mannesmann tube-piercing method. In the case of the electric light bulb the design concept came first, derived from logical use of scientific principles, followed b
fixed-joint
发表于 2025-3-23 18:08:32
How Strength can Fail,a problem tend towards safety and which towards danger of failure. The trouble starts when attempting to give it a numerical value. In design practice there is no single value for assessing safety margins, as can be seen from the examples below.
CHOP
发表于 2025-3-23 22:50:50
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向外
发表于 2025-3-24 04:39:13
Some Motions,s usually guided by three surfaces arranged in V-flat formation as in figure 31a, giving unique kinematic location so long as the loads are downwards. Where this is not certain, slides are often of dove-tail shape, with three fixed surfaces, the fourth being adjustable, as in figure 31b. If we provi
nutrients
发表于 2025-3-24 08:39:29
Materials in Outline,se; to call for materials new to the maker can produce problems of supply, identification, treatment and storage. So whenever possible the designer should check up on this point and possibly change one or the other, material or maker.
aerobic
发表于 2025-3-24 14:43:26
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annexation
发表于 2025-3-24 17:17:40
Bearings and Seals,section on flexure bearings, useful where small movements are involved. In instrument work, crossed-leaf springs form a friction-free and slack-free pivot for angular movements of a few degrees. The arrangement requires at least three springs for symmetry. Any loads which tend to compress the spring
ODIUM
发表于 2025-3-24 21:31:17
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不可磨灭
发表于 2025-3-25 02:30:43
2522-834X duate students and graduates in the field of medicine and pharmaceutics, and professionals working in the field of brain disorders... .978-3-031-62606-7978-3-031-62604-3Series ISSN 2522-834X Series E-ISSN 2522-8358