The vibrational modes and spectrum are very different if the free boundary condition is adopted, and the spectrum is divided into low, medium and high frequency branches.
若采用自由边界条件，则模花样和振动频谱完全不同，这时只能分为低频支、中频支和高频支。
Based on the random variation of cavity length, characteristics of the medium index and mode competition effect, low-frequency beat and noise continuums are explained.
根据腔长的随机变化、介质色散特性和模竞争效应解释了低频拍和连续噪声谱。
ConclusionThe modulated medium frequency low frequency current hydroelectric bath therapy is a simple, safe and better effect method for sequela of ankle fracture.
结论低频调制的中频电水浴疗法是治疗踝部骨折后遗症的一种简单、安全、疗效好的方法。
Magnetic field distribution of low frequency electromagnetic wave in even medium is analyzed, which is related to the medium's dielectric coefficient and magnetic inductive capacity.
分析了低频电磁波在均匀介质中的磁场分布，其分布与介质的介电常数、磁导率密切相关。
Wider pulse width, low pulse frequency and medium peak power should be used when pulse laser welds magnesium Alloy.
脉冲激光焊接镁合金时应遵循较大脉宽、低频率、中等峰值功率的原则。
ObjectiveTo compare the effects of modulated medium frequency low frequency current hydroelectric bath therapy and electromagnetic therapy on heel pain.
目的比较低频调制的中频电水浴疗法与电磁疗法治疗[足]跟痛的疗效。
In this thesis, series of low carbon cast steel shot were successfully obtained by medium-frequency melting and centrifugal atomization technologies and temper were performed.
采用中频熔炼、离心雾化凝固冷却得到铸态低碳铸钢丸，并对此进行相应回火处理得到不同硬度及寿命的低碳铸钢丸。
It features the low sintering temperature resulting in low power consumption, medium dielectric constant, high quality factor and temperature stable resonant frequency.
其具有降低烧成温度节能、中等介电常数、高品质因数、稳定的谐振频率温度特性。
Vocabulary can generally be divided into three groups: high, medium and low frequency.
字汇大致上可以分成三类：高使用率、等使用率、使用率。
Objective To investigate the effects o ultrashort wave and low-medium frequency electrotherapy on the patients with disc hernia after surgery.
目的观察超短波联合低中频电治疗腰椎间盘突出症术后神经功能恢复的临床疗效。
Rock wool has good absorption function for medium and low frequency noise and various types of vibration noise. This will be very favorable for reducing noise and improving work environment.
尤其对中低频和各种振动噪声均有良好的吸收效果，十分有利于减少噪音污染，改善工作环境。
The peak value of lightning frequency and rainfall period is consistent, the merger of medium and small scale rain cluster and low-layer convergence is one of the causes for short-term rainfall.
闪电频数与强降水时段的峰值较一致，中小尺度雨团合并和低层辐合是造成短时强降水的原因之一。
Low, medium and high voltage, standard, Use in big screen color-TV, frequency conversion air conditioner audio circuits, ets.
低中高压，焊针式标准品，可用于大萤幕彩电、变频空调、音响等电子线路中。
Low, medium and high voltage, standard, Use in big screen color-TV, frequency conversion air conditioner audio circuits, ets.
低中高压，焊针式标准品，可用于大萤幕彩电、变频空调、音响等电子线路中。
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