The pulse width adjustable pulse generators are usually used in accurate measurement.

脉宽可调的脉冲发生器常用于精密检测。

youdao

Other special features include adjustable width (though no adjustable weighting -- c'mon, guys), a huge "wing" on the right side meant to keep your fingers from dragging, and a software suite that lets you record macros, tweak the million on-board lights, and even turn the bulky rodent into a fairly-functional joystick.

ENGADGET: Fanatec Head$h0t gaming mouse reviewed