下滚轮 meaning in Chinese

bogie roller

To extand the length of lower feed roller . to offer you more stable feeding , low breakdown and easy to repair . the machine speed don ‘ ‘ t disturb the stitch length
加长下滚轮长度，使送布稳定，降低故障率，更换容易，不因速度快慢产生大小针。
Besides owning all the basic functions that normal mouse has , this professional kind of one - button - online mouse can make computer run internet explorer automatically and goes into the designated website when computer users press the wheel button , ( such as : revenue web station , insurance company web , hotel web , custom web , school web , car web , super market web , mineral & industrial enterprise web station etc
带一键上网功能的专业鼠标，具备普通鼠标的任何功能，可是按下滚轮键，电脑会马上自动打开浏览器进入指定的网站（例如：税务局网站，保险公司网站，酒店网站，海关网站，学校网站，汽车网站，超级市场网站，工矿企业网站… …等网站）。