| 释义 |
propelment|prəʊˈpɛlmənt|
[f. propel v. + -ment.]
a. The act of propelling; propulsion.
b. concr. The propelling mechanism of a clock or other recording instrument; spec. an escapement in which the pallets drive the escape-wheel (instead of the reverse, as in an ordinary clock).
1890in Cent. Dict. |