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π SIMILAR VOLUMES
## I42 CURRENT TOPICS. [J. F. I. liquid. In addition, it speeds the work because fewer coats are adequate. It is claimed that the finishing of wing or stabilizer surfaces, for example, which formerly involved as many as sixteen operations, now requires only seven. R. H. O.
Details are given for the construction of a membrane-covered oxygen electrode and the electrode coupling circuit, water-jacketed reaction vessel, and water-driven magnetic stirrer, all of which are incorporated into a compact self-supporting unit. The complete unit is particularly suited to the und
The work deals with a simple design of a digital pole-assignment control of unknown single input-single output, time-invariant hnear plants. For this aim only the pertinent plant step response has to be known. The controller parameters result from a straightforward evaluation of the step response, w