poundal造句

例句与造句

1. This was measured in poundals, Hinners said.
2. A poundal is the force needed to accelerate a one-pound mass one foot per second per second.
3. The units of slug and poundal are designed to avoid a constant of proportionality in Newton's Second Law.
4. The conversion for the poundal is given by 1 pdl = 1 lb穎t / s 2 = ( precisely ).
5. Expressions derived using poundals for force and lb for mass ( or lbf for force and slugs for mass ) have the advantage of not being tied to conditions on the surface of the earth.
6. It's difficult to find poundal in a sentence. 用poundal造句挺难的
7. Note : Slugs ( 32.174 049 lb ) and poundals ( 1 / 32.174 049 lbf ) are never used in the same system, since they are opposite solutions of the same problem.
8. Since one poundal equals about 4.4 newtons, it would seem that such an error would be readily detected, but Hinners said this was not the case because the thrusters contributed only a little to the orbit.
9. An alternative unit of force in a different foot-pound-second system, the absolute fps system, is the poundal, defined as the force required to accelerate a one-pound mass at a rate of one foot per second squared.
10. Specifically, computing " F " = " ma " on the moon or in deep space as poundals, lb穎t / s 2 or lbf = slug穎t / s 2, avoids the constant tied to acceleration of gravity on earth.
11. :: : : In the UK in the 60s / 70s, we were taught that a pound is a unit of mass, and its associated force is a poundal .-- talk ) 11 : 43, 18 January 2015 ( UTC)
12. :: : : : Yes, I remember meeting the slug as an amusing aside in the 1960s, but the poundal was much more common as a unit of force in the Foot pound second system ( where the pound has to be mass ).
13. The term " imperial " should not be applied to English units that were outlawed in the Weights and Measures Act 1824 or earlier, or which had fallen out of use by that time, nor to post-imperial inventions, such as the slug or poundal.
14. An internal review team at NASA's Jet Propulsion Laboratory, in a preliminary conclusion, said that engineers at Lockheed Martin Corp ., which had built the spacecraft, specified certain measurements about the spacecraft's thrust in poundals, an English unit, but that NASA scientists thought the information was a metric measurement known as newtons.