sprag

n. 制轮木 [机] 插模钉

发音

其它 /spræɡ/

词形变化

sprags 复数 sprags spragged spragging sprags 三单 spragging 现在分词 spragged 过去式 spragged 过去分词 more sprag 比较级 most sprag 最高级

释义与例句

n.
  1. 1.

    A billet of wood; a piece of timber, a similar solid object or constructed unit used as a prop.

    1956, United States Department of the Army, United States Department of the Air Force, Principles of Automotive Vehicles, Technical Manual 9-8000, page 325, A sprag (fig. 349) is a steel block so shaped as to act as a wedge in the complete assembly. In the sprag unit under discussion, there are 42 sprags assembled into an outer race and held in place by two energizing springs (fig. 350).

    1981, (US) Departments of the Army and Air Force, Maintenance: Direct Support, and General Support Level, Technical Manual 9-2520-246-34-1, page 2-201, When checking sprags, anvil and spindle ends of micrometer and flat back of sprag must all rest on a flat surface as shown in view A. Since wear on all sprags in any one sprag unit will be the same, it is only necessary to check 5 sprags in each assembly.

v.
  1. 1.

    To check the motion of, as a carriage on a steep slope, by putting a sprag between the spokes of the wheel.

    及物
  2. 2.

    To prop or sustain with a sprag.

    及物
adj.
  1. 1.

    Alternative form of sprack.

词汇关系

名词

同义词 1

pit prop

上位词 3

prop wedge chock

词源

See spray (“a branch”).

来源：wiktionary