An instrument designed to maintain a continuous record of atmospheric pressure is a(n)().
A、mercurial barometer
B、aneroid barometer
C、barograph
D、thermograph
A、mercurial barometer
B、aneroid barometer
C、barograph
D、thermograph
A、cylinder pressure B、flame intensity C、exhaust gas temperature D、crankshaft axial alignment
A、A.Hard alloy steel construction B、B.Beveled edges on the valve head C、C.Low alloy steel construction D、D.Poppet type design
A、used to measure the speed of wind B、in which the pressure of air is measured C、that tells which dirction a storm is coming from D、used to measure the height of waves
A、type of cargo gear B、instrument used in celestial navigation C、instrument used to measure relative humidity D、instrument used to measure specific gravity
A、over an electrically heated platinum filament B、where it is mixed with nitrogen C、where it is ignited by a sparking device D、where its specific gravity is measured