Malaise
发表于 2025-3-27 00:29:33
Alternating-current Theory,An alternating signal (which can be either a voltage or a current) periodically reverses its direction, having positive polarity during one part of its cycle and negative polarity in the remainder.
平
发表于 2025-3-27 01:40:29
Single-phase A.C. Circuits,The quantities used in this chapter (that is, ., etc.) are r.m.s. quantities.
盘旋
发表于 2025-3-27 07:06:58
Three-phase A.C. Circuits,In this chapter it is assumed that the supply system has a symmetrical set of three-phase voltages, which have equal values of phase voltage, and that the three phasors are displaced from one another by 120°.
侵蚀
发表于 2025-3-27 12:23:10
Transformers,The r.m.s. values of the e.m.f.s . and . induced in the primary and secondary windings respectively are, with a sinusoidal supply.where . = supply frequency (Hz), . and . = respective number of turns on the primary and secondary windings, and . = maximum value of the magnetic flux (Wb) in the core (the flux waveform is assumed to be sinusoidal).
有效
发表于 2025-3-27 17:10:35
Measurements,An analog instrument indicates the value of the quantity being measured by means of a pointer, whose indication varies smoothly with the measured quantity.
遗弃
发表于 2025-3-27 20:19:43
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提名
发表于 2025-3-28 01:56:58
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墙壁
发表于 2025-3-28 02:34:41
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jumble
发表于 2025-3-28 08:26:38
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过多
发表于 2025-3-28 14:21:14
Günter Stangl,Carine Bruyninxf opening the BBB with ultrasound and microbubbles. Moreover, possible interactions of this novel delivery method with brain disease as well as safety aspects of BBB disruption with ultrasound and microbubbles will be addressed.