横振动

transverse vibration

horizontal / across / crosswise / horizontal stroke (in Chinese characters) / to place (sth) flat (on a surface) / to cross (a river, etc) / in a jumble / chaotic / (in fixed expressions) harsh and unreasonable / violent

harsh and unreasonable / unexpected

to shake / to flap / to vibrate / to resonate / to rise up with spirit / to rouse oneself

to vibrate / to shake / vibration

(of sth) to move / to set in movement / to displace / to touch / to make use of / to stir (emotions) / to alter / abbr. for 動詞|动词[dong4 ci2], verb