听石由许多小结晶的耳石形成.Otolith are found from many small crystalline otoconia.目的:探讨颗粒复位法对后半规管耳石引起的良性发作性位置性眩晕的治疗效果.Objective To evaluate the effect of particle repositioning manoeuvre for posterior canal benign paroxysmal position...
Gunpowder is composed of sulfur, carbon, and potassium nitrate.火药是由硫 、 碳和硝酸钾组成.A smell of gunpowder penetrated the woods.森林中弥漫着火药味.Gunpowder was used in China as far back as the 11 th century.远在公元11世纪,中国已使用火药.Gunpowder w...
parallel cases,except that one is younger than the other情况类似，只是一个比另一个年轻一些It is most often diagnosed in women in their thirties and forties, although I've seen it in many younger women, as well...这种病一般多发于三四十岁的女性，但我也见...
Vast tracts of the country are wild and undeveloped...乡间大片大片的荒地尚未开发。Each sequence is made of transgressive system tracts and highstand system tracts.认为娄山关组由7个三级层序组成,层序界面为古岩溶不整合面或暴露带,每个层序都由海进体系域和高水位体系域构成.Large tracts of w...