flow-control valve

• 流量控制阀

flow-control valve的用法和样例：

例句

1. A drinking vessel, which is especially adapted for use by infants, toddlers and the like, includes a cup, a lid and a flow control valve.
   特别适于婴儿，幼儿和类似人使用的饮用容器，包括一杯，一盖和一流量控制阀。