Analog fixed speed and digital variable speed.

模拟固定速度和数字式可变速。

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Digital variable frequency is a key technology of soft radio.

数字下变频技术是软件无线电中的关键技术之一。

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At present, digital variable displacement axial piston pump has some problems.

目前，数字变量轴向柱塞泵还存在着很多问题。

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We need to move away from this system dominated and characterized by the measure of time and other inputs in which we hold time as a constant for everyone and learning is variable to a competency-based learning system powered by digital learning in which time becomes the variable and student learning the constant and the system is based on outcomes.

FORBES: The Single Best Idea for Reforming K-12 Education

Other shooting modes for capturing action include high-speed digital still recording at up to 60fps and variable speed time-lapse recording.

ENGADGET: JVC launches Procision slow-mo HD camcorder, refreshed Everio line at CES