2011年父亲节流行礼物是卡片。

Father's Day 2011 Is in the CARDS.

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因此，这种阀门对于启闭和节流双重应用的场合是很好的选择。

Therefore, it is an excellent choice for combination on-off and throttling applications.

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这样使用节流管汇是不正确的。

It's not right to use manifold in this way.

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节流式流量计是目前工业上应用得最广的一种流量计。

Head flow meter is one most widely used in present industry.

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节流式流量计是目前工业上应用得最广的一种流量计。

Head flow meter is one most widely used in present industry.

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