With flow through valve, primary disc opens away from diaphragm seal.

当流体通过阀门时，第一阀瓣开启，从隔膜密封上离开。

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This article introduces the worked principle of disc-pipeline continuous conveyor, determines the structure of primary installation.

介绍了串联盘式管道连续输送设备的工作原理，确定了主要装置的结构。

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It features a primary check valve utilizing a rubber disc seating against a mating rubber part to ensure tight closing.

其特点在于第一止回阀采用一个橡胶阀瓣密合在相配的橡胶部件上，确保紧密的关闭。

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As the primary developers of the compact disc, Sony and Philips Electronics have long enjoyed royalties on certain optical disc patents.

FORBES: Geekdom gone gaga