| 单词 | adjustable pitch |
| 释义 | > as lemmasadjustable pitch adjustable pitch n. a pitch of a propeller or screw which can be adjusted when it is at rest; frequently attributive. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > propulsion machinery > [noun] > propeller > specific attributes of propellers pitch1853 adjustable pitch1858 slip ratio1878 society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > means of propulsion > [noun] > aircraft engine > propeller > pitch pitch angle1902 adjustable pitch1909 pitch control1930 pitch1944 society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > means of propulsion > [adjective] > types of propeller feathering1909 reversible-pitch1919 adjustable pitch1934 coaxial1934 1858 Abridgements Specif. Marine Propulsion Index 322/1 Blades with adjustable pitch. 1909 Car 5 May 451/1 Look to your propeller which..has an adjustable pitch. 1934 Flight 15 Feb. 156/1 The airscrews are of the three-bladed adjustable-pitch type. 1961 M. G. Say Electr. Engineer's Ref. Bk. (ed. 10) ii. 61 A particular type of this propeller turbine is known as the Kaplan, and here the blades have an adjustable pitch enabling them to accommodate themselves to a wide range of operating conditions. 2009 V. Nelson Wind Energy vi. 116 The three methods of regulating output are passive stall, where the wind turbine operates at fixed rotational speed with fixed-pitch blades; active stall, where the wind turbine operates at fixed rotational speed with adjustable pitch; and variable pitch, where the wind turbine operates at variable rotation speed with adjustable pitch blades. < as lemmas |
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