measuring instrument designed to measure small forces by the torsion they exert on a thin wire

current weak ep test comes to 10-13 by the rotating torsion balance and lunar laser ranging methods.

地面旋转扭秤法和地月测距方法在10-13精度内验证弱等效原理依然成立。

frame plate torsion balance is a measurement instrument by modifying the general frame-pan balance scale.

架盘扭力天平是由普通架盘天平改型的衡量仪器。

equivalence principle (ep), as one of the fundamental hypotheses of einstein's general relativity, has been tested by many experiments, including the torsion balance scheme and the free fall one.

等效原理是爱因斯坦的广义相对论的一个基本假设，人们已经采用多种方法对等效原理进行实验检验。

the extraordinary sensitivity of the torsion balance instrument has made it a valuable tool to search for new weak macroscopic forces.

精密扭秤已经成为一种探测新的相互作用的有效工具。

it is significant for equivalence principle test for extended rotating bodies with a torsion balance to measure the internal friction torque of a gyroscope.

本文简要阐述等效原理的研究背景，通过对自由落体法和扭秤法检验等效原理的详细介绍来具体讨论等效原理的实验检验。

a restrict limitation for expected precision of equivalence principle test of extended rotating bodies with a torsion balance was set.

这一大小对宏观旋转物体等效原理检验扭秤方案的预期精度给出了严格限制。

a portable torsion balance is used for weighing.

用一台轻便的弹簧秤称重。