Verizon's V CAST is a good example of this; at an average bitrate of around 400kbps, an hours worth of television would require 180MB of data.
Verizon的V CASV就是一个很好的例子；在平均400kbps的比特率，一个小时的电视需要180MB大。
V-port trim has a more linear throttling curve than plug or ball discs, but none of these trims are recommended for continuous severe throttling which may require using a control valve.
形端口阀内件截止阀比塞形阀瓣或球形阀瓣截止阀具有更加线性的节流曲线，但是，所有这些类型的截止阀都不建议连续用于严格的节流应用中，这种情况可能需要采用控制阀。
The Bus Couplers require a 24 V DC supply for their operation.
总线耦合器需要一个24VDC电源的操作。
The Bus Couplers require a 24 V DC supply for their operation.
总线耦合器需要一个24VDC电源的操作。
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