分类:Healthy 的存档信息

什麽是超聲波治療?

20kHz以上的聲波稱爲超聲波。將超聲波Portable ultrasound應用于人體以達到治療目的的方法稱爲超聲波療法。超聲波是一種聲波,超過了人耳的聽覺極限。聲源的機械振動會引起周圍彈性介質的振動,振動沿介質由近及遠傳播,形成機械波-聲波。 超聲波在人體組織中産生機械效應、熱效應和空化效應,導致局部組織血流量增加,血液循環改善,血管壁蠕動增加,膜通透性增强,離子再分… (阅读全文)

A substitute teacher 27 years a school

From January 8 to January 9, 2018, Chahe Village, a state-owned special village located in Fenghuang County, western Hunan Province, suffered from freezing rain over many days and continued to cool down. Chalong elementary school teacher Long Jiujin was inadvertently enjoy the beauty of the village has been continuously cut off water for 5 days, … (阅读全文)