管径

pipe diameter的用法和样例：

例句

The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.文中还分析了在摩擦阻力系数一定的情况下，流量与管径的制约关系。
Diameter of the suction and evaporating pipes should be decided by oil circulation and reconfirmation of gas speed.吸气管及蒸发器管径，应考虑回油并再次确认流速后确定。

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有声英文阅读

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A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O

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购物英语对话

【购物】买平底锅-Buying a Pan

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购物-Shopping

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英语口语

Tree climbing: Part 2

Tree climbing: Part 2 NB: This is not an accurate word-for-word transcript Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme（节目,计划）, Im joined by Kate.

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六分钟英语

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Bad weather meant that oil could not be pumped out of the ship the Rena today. The waves were too high. Pumping the oil is slow work because the oil is cold and thick. The pipe from the Rena to the oil barge is nearly 200m long and quite narrow, 7.5c

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新西兰英语

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学英语单词

agenda-setting function

alabado

amplified spontaneous emission suppression ratio

bolometric light curve

brass castingss

character part

chess move