This paper presents a π equivalent circuit model of penstock in hydro-plant based on the transient flow function of penstock.

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A new scheme of frequency measurement in hydro-turbine governor is introduced in this paper. Instead using single-chip computer or P LC high-speed count module, it utilizes the interrupt functions and high-speed counter in the PLC base unit and peripheral circuit. With enhanced reliability and reduced cost, the governor designed in this scheme shows good application pr ospect.

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Hydro-liquefactions of coal were carried out in a miniautoclave using diphenylmethane and phenetole as model compounds in tetralin solvent.

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At that time, Ontario Hydro wanted to build a nuclear plant in nearby Pickering, Ontario.

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Finally, through the analysis of various factors affecting the dynamic model of hydro-generating, spindle system is simplified, the reasonable simulation platform of turbine rotor dynamic balance system is constructed, in which nonlinear oil film is incentive.

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Objective:To search the best method for how to use the Polyamide hydro gel in face-plasty.

目的：探討應(yīng)用醫(yī)用聚丙烯酰胺水凝膠進(jìn)行面部整形的最佳方法。

Therefore, careful pre-, hydro-geological exploration of science is very necessary.

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Usually they exist as proenzyme, but after activation, they rapidly attack the blood brain barrier, degrade some matrix proteins of the basis membrane, break down the endothelial cell close connection protein, and promote the hydro-cephalus formation and phlogocyte infiltrating.

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