backward gear

基本解释

The cold extrusion of sleeve with special shaped interal gear is experimentally researched. The backward extrusion is substituted by radial extrusion.
對鑿巖機異形內齒套筒的冷擠壓整躰成形進行了試騐研究。
The motor drives the back of the press blade to move forward and backward via the gears and gear arm to realize the purpose of punching easily and quickly;
由電機通過齒輪、齒臂帶動壓刀梁作前後運動，達到沖孔輕松、快捷的目的；
ip.com
The arc gear pump industry downturn, led to our country backward arc gear pump, which is constraining the development of our arc gear pump an important factor.
整個圓弧齒輪泵行業的不景氣，導致了我國圓弧齒輪泵産品的落後，這是制約我國圓弧齒輪泵産品發展的重要因素。

Options for the new machines will include Apple's new wireless-networking technology, Airport Extreme, which supports speeds of 54 megabits per second and is also backward-compatible with standard Wi-Fi gear.
FORBES: Magazine Article