Cynthia looped the coils of the telephone cord around her finger.
The leathery coils of its shiny body lay in a heap, stacked at least three tiers high.
Branches are taken off the flow pipe, and after circulating through coils or radiators are connected with the return pipe.
Radiators (really convectors) were in their primitive design coils of pipe, used to give a larger heating area than the single pipe would afford.
The galvanometer being so adjusted that a current of definite strength through one of the coils gives a definite deflection of the needle, the amount of leakage expressed in terms of the insulation resistance of the wires is given by the formula.
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