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- fiiction of perforations 孔眼摩阻
- How many meters is the tubing to be run to above the top of perforations? 油管下到距射孔顶界多少米?做抽汲准备。卡绳帽。连加重杆。上抽汲胶片。挂抽子头。
- A sheet molded with hundreds of perforations, from 10 to 100 microns across, can be manufactured using soft lithography and set down on another surface. 他们可以利用软微影术制造一片东西,上面戳有数百个直径10~100微米的小孔,然后将之覆盖在另一表面上。
- The upper set of perforations was producing most of the fluid, which further confirmed that the associative polymer significantly reduced water production from the lower zone. 上部孔眼生产出的大多数流体,更加进一步证实结合聚合物的使用极大减少了部分产层出水情况。
- How can I persuade you of my sincerity? 我如何能够让你相信我的诚意?
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- Have a glass of beer to rinse your dinner down. 喝杯啤酒把你吃的晚饭冲下去。
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
- Your work falls short of my expectations. 你的工作未达到我的期望。
- He bit off a large piece of the apple. 他咬下一大块苹果。
- He emphasized the importance of careful driving. 他强调小心驾驶的重要性。
- I have a huge pile of letters to deal with. 我有一大堆信件要处理。
- He gave a description of what he had seen. 他描述了他所见到的一切。
- It is a fact of life and you must face it. 这是严酷的现实,你必须面对它。
- It is wrong of you to bully the child. 你不该欺侮那个孩子。
- a toothed wheel for making a row of perforations 用来打一系列孔的齿轮
- I need a piece of string to tie this parcel up. 我需要一根细绳把这包裹扎起来。