weightlessness

音标发音

adj性质的同根词
weighted：[数]加权的；加重的；衡量过的。
weighty：重的；重大的；严肃的。
weightless：失重的；无重量的。
adv性质的同根词
weightily：重要地；沉重地。
n性质的同根词
weight：重量，重力；负担；砝码；重要性。
weigh：权衡；称重量。
weighing：称重量；考虑权衡；悬浮。
weighting：加重，加权；衡量；（英）生活补贴。
weightiness：重；重要性。
v性质的同根词
weighing：称量（weigh的现在分词形式）；考虑斟酌。
weighted：加重量于…；重压（weight的过去分词）。
weighting：加权；称量（weight的现在分词）。
vi性质的同根词
weigh：重量为…；具有重要性；成为…的重荷；起锚。
vt性质的同根词
weight：加重量于，使变重。
weigh：权衡；考虑；称…重量。

Astronauts in flight must adjust to weightlessness.
宇航员在飞行中得适应失重状态.
Objective To observe bone mass changes during convalescence after simulated weightlessness.
目的观察模拟失重恢复期骨质的变化.
To apply engineering Methods : To the study of astronaut adaptation to weightlessness.
应用工程方法于宇航员在无重状态下的适应性研究.
Objective To study the effects of short - term simulated weightlessness on human vectorcardiogram ( VCG ).
目的探讨短期-6°头低位卧床模拟失重对人心电向量图 ( vectorcardiogram,VCG ) 的影响.
Objectives : To investigate the microflora in rats gastrointestinal under simulated weightlessness.
目的: 研究模拟失重条件下大鼠肠道菌群变化情况.

the state of having or appearing to have no weight; the fact of not being affected by gravity (= the force that makes things fall to the ground)

失重
Weightlessness is one of the problems which human must face with and solve during space flight.
失重是航空航天过程中人类必须面临和克服的问题。
失重状态