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- Air hole, burnthrough, cooapse and welding crackle occurred in the fixed overhead weld for aluminium and aluminium alloy tubes, above all the small-size thin wall tube. 针对铝及铝合金管,特别是小口径薄壁管固定口仰焊部位易出现气孔、烧穿、塌陷及焊接热裂纹等问题,分析问题存在的原因,从焊接工艺方面入手,提出一套消除气孔及烧穿的操作手法。
- The overhead costs are ridiculously expensive. 日常开支太高了。
- Seagulls were circling overhead. 海鸥在头顶山盘旋。
- Her overhead smash went out of the court. 她的高手扣球打出了场外。
- A flock of wild geese flew overhead. 一群野鹅从头顶飞过。
- The airplane was immediately overhead. 飞机几乎就在正上方。
- I can hear a plane flying overhead. 我听到一架飞机正从上空飞过。
- Some metals weld better than others. 有些金属容易焊，有的不容易焊。
- The city has decided to do away with overhead wires. 那个城市决定取消架在空中的电线指将把电线埋入地下。
- On reaching welding heat, the metal surfaces are pressed together. 当金属表面达到焊接热度时就会压在一起。
- Reducing overhead take priority over increasing turnover. 与增加营业额相比，应优先考虑降低间接费用。
- Their office is in central Beijing, so their overhead is very high. 他们的办事处设在北京市中心，所以他们的日常开支很大。
- Some of the students are welding capacitor; the others resistor. 学生中的一些人在焊接电容，另一些人在焊接电阻。
- The trolley bus picks up current from an overhead wire. 无轨电车的电能是通过架空线供给的。
- Some of the students are welding capacitors; the others resistors. 学生中的一些人在焊接电容，另一些人在焊接电阻。
- Situated at the vertex or highest point; directly overhead. 顶点的在顶点或者最高点的; 头的正上方的
- It takes speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
- A great congregation of birds flew overhead. 一大群鸟从头上飞过。
- A flock of gulls circled overhead as the boast sailed into the port. 船只驶入港口时，一群海鸥在船上方盘旋。
- An oxygen mask will come down from overhead in case of an emergency. 若发生紧急情况，头顶上会降下一只氧气面罩。
