free fall

听听怎么读

英 [fri: fɔ:l]

美 [fri fɔl]

是什么意思

自由降落（尤指降落伞张开前的降落），（尤指火箭等的）惯性运动；

变形

复数：free falls

英英释义

free fall

n.
- the ideal falling motion of something subject only to a gravitational field
- a sudden sharp decrease in some quantity
  同义词：dropdipfall

学习怎么用

双语例句

For large, extended chords thrust is preferable to free fall.
用推力动作弹奏伸展的大和弦优于自由下落动作。
It was observed that, with a wider orifice, kinematic arching effect vanishes and even free gravity-fall arises.
在大出口情况，结拱不易形成，并出现颗粒自由下落现象。

权威例句

FREEFALL
Freefall
Freefall
Dynamics of Self-Gravitating Gaseous Spheres—III: Analytical Results in the Free-fall of Isothermal Cases
Rapid high-temperature pyrolysis of biomass in a free-fall reactor
Free fall detector device and free fall detection method
A New Free-Fall Profiler for Measuring Biophysical Microstructure
Erratum: New tests of the universality of free fall
Republication of: The geometry of free fall and light propagation
Morphological characterization of carbonaceous aggregates in soot and free fall aerosol samples
High pressure hydropyrolysis of coals by using a continuous free-fall reactor ☆ ☆
Augmentation by 4-aminopyridine of vestibulospinal free fall responses in chronic spinal-injured cats.
Free-Fall Behavior of Planar Snow Crystals, Conical Graupel and Small Hail.

f开头的单词