原文①A first reason for taking great-er interest is that instrumentation sub-assemblycosts are rapidly changing so that the mechani-cal proportion is now appearing as a most signif-icant②cost component,this being dye to theenormous reductions that have occurred in thecost of the electranic assemblies that formerlywere a significant cost factor.Instruments aregenerally designed to a selling price;they are notsold nor necessarily costed on the degree of in-ternal sophistication,of which③the user is often 原文 ①A first reason for taking great-er interest is that instrumentation sub-assemblycosts are rapidly changing so that the mechani-cal proportion is now appearing as a most signif-icant②cost component, this being dye to theenormous reductions that have occurred in thecost of the electranic assemblies that formerlywere a significant cost factor .Instruments aregenerally designed to a selling price; they are nots nor nor necessarily costed on the degree of in-ternal sophistication, of which③the user is often