This paper, take the production of bellows for example, introduce the method of variable coefficient extension.

此文以波纹管生产为例，介绍了变系数拉伸法。

youdao

Camera extension: The length of bellows in a process camera.

相机伸长度：制版照相机的暗箱长度。

youdao

Camera extension: the length of bellows in a process camera. It is the distance between the lens diaphragm and the image plane.

暗箱：制版照相机上可以伸缩的部份，它连接起镜头和影像平面。

youdao

According to a November 3rd interview with CEO, Matthew Bellows, Yesware offers a browser extension to Google (GOOG) Gmail that lets sales people report on their activity very efficiently and accurately and streamlines their email communication.

FORBES: Yesware Boosts Sales Productivity, Financial Forecasts