微生物
发表于 2025-3-28 16:11:26
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CURT
发表于 2025-3-28 22:18:01
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鬼魂
发表于 2025-3-29 02:23:47
System Analysis in the Time Domaincorresponding time response involves the solution of high-order differential equations, using the inverse Laplace transformation, which is a laborious method even for simple input functions such as step and ramp-step demands.
厚颜无耻
发表于 2025-3-29 06:40:43
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grieve
发表于 2025-3-29 10:59:38
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Corral
发表于 2025-3-29 12:45:49
Working Pressureshe pump is frequently the most expensive single item in a control system its choice can have an important bearing on total system cost. Three distinct types of positive displacement pump are available: gear pumps, vane pumps and piston pumps.
野蛮
发表于 2025-3-29 18:57:20
Control Elementsal hydraulic control devices the input variable is most likely to be a low-power electrical analogue or digital signal, the former providing infinitely variable, the latter discrete control of either flow or pressure.
scrutiny
发表于 2025-3-29 22:48:03
Principles of Flow Control for Valve-Operated Systems: Part 2 rectangular control orifices were replaced by round orifices, mainly to reduce manufacturing costs. In this chapter the characteristics of round control orifices and their effect on valve parameters will be examined.
adulterant
发表于 2025-3-30 00:56:30
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可憎
发表于 2025-3-30 07:19:16
tries all over the world, and together with communication technology are largely responsible for the high standard ofliving prevalent in many communities. The brains of the vast majority of current control systems are electronic, in the shape of computers, microprocessors or programmable logic contr