This famous illusion is known as the twisted cord or false spiral illusion.
这个著名的错觉被称为扭曲的螺旋线或者虚假的螺旋幻象。
Objective: To identify the sonographic normal values and influencing factor of human vocal cord and false vocal cord and to confirm the value of high-frequency ultrasound applying to the larynx.
目的：探讨正常喉部声带和室带各径线的超声生理测值及其相关影响因素，进一步肯定高频超声在喉部的应用价值。
Objective: To identify the sonographic normal values and influencing factor of human vocal cord and false vocal cord and to confirm the value of high-frequency ultrasound applying to the larynx.
目的：探讨正常喉部声带和室带各径线的超声生理测值及其相关影响因素，进一步肯定高频超声在喉部的应用价值。
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