我要把牙科手术椅往后倾一些，这样可能有点帮助。

I'll tip the dental chair back and that will help.

youdao

对医学类大专院校进口的治疗仪器如呼吸机、监护仪、心脏起搏器、牙科椅等手术及治疗仪器应不予免税。

The medical instruments, such as ventilators, patient monitors, heart pacemakers, and dentistry chairs, etc., imported by medical colleges and universities shall not be exempt from taxes.

youdao

对医学类大专院校进口的治疗仪器如呼吸机、监护仪、心脏起搏器、牙科椅等手术及治疗仪器应不予免税。

The medical instruments, such as ventilators, patient monitors, heart pacemakers, and dentistry chairs, etc., imported by medical colleges and universities shall not be exempt from taxes.

youdao