The contactless electrostatic resonance method to determine the cross sectional area of conductive and unconductive monofilament was introduced.
介绍了一种可测试所有导电和非导电纤维横截面积的非接触式静电共振法。
2
An offset cross structure for supporting secondary mirror is proposed. The structure has a higher resonance frequency so it can be applied to large-aperture telescope.
提出了次镜支撑的偏置十字型中心结构，该结构具有较高的谐振频率，因此可以用于大口径望远镜中。
3
By changing the cross sectional radius decay coefficient of the exponential metal horns, the longitudinal and torsional vibrations in the transducer could resonate at the same resonance frequency.