| 释义 |
volumetric, a.|vɒljuːˈmɛtrɪk|
[Cf. prec. and metric a.2]
Of, pertaining to, or noting measurement by volume. volumetric efficiency (Mech.), the ratio of the volume of fluid actually displaced by a piston or plunger to its swept volume.
1857H. E. Roscoe tr. R. Bunsen's Gasometry 170 The saturated solution..becomes sufficiently diluted..to allow the ammonia to be determined by a volumetric analysis with sulphuric acid. 1862Catal. Internat. Exhib., Brit. II. No. 2904, Containing everything necessary for the preparation of the test liquors, or their use in volumetric analysis. 1864Garrod Mat. Med. (ed. 2) 352 In making use of the volumetric solutions a graduated tube or alkalimeter is employed. 1880Proctor Rough Ways made Smooth 100 Professor Newcomb has, I conceive, omitted to consider the enormous volumetric expansion. 1912Proc. Inst. Automobile Engineers VI. 78 In the writer's opinion, volumetric efficiency is almost entirely a function of port area. 1930Engineering 11 July 31/2 The standard valve tuning of the E.35 engine is arranged for the best possible volumetric efficiency at 1,500 r.p.m. 1973A. Parrish Mech. Engineer's Ref. Bk. ii. 51 Leakage tends to be greater than in a reciprocating design but as they [sc. rotary positive displacement pumps] are often used for viscous fluids such as oil, this effect may be reduced to give a volumetric efficiency of 95%. |