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- The reason of corrosion and leakage for visbreaking fractianator overhead system are analyzed,its treatment and anticorrosion measure are also pointed out. 对减粘分馏塔顶油气系统腐蚀泄漏原因作了分析，指出了处理方法和防腐措施。
- overhead system of atmospheric tower 常顶系统
- overhead system of atmospheric-vacuum distillation 常减压塔顶系统
- Analysis of Leaking of Air Cooler in Crude Unit Overhead System 常减压装置空冷器泄漏的技术分析
- 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。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- 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。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- I can hear a plane flying overhead. 我听到一架飞机正从上空飞过。
- Public opinion was against the old feudal system. 公众舆论反对旧的封建制度。
- The system works on the principle that heat rises. 该项装置是按照热力上升的原理运转的。
- The drainage system has been aged. 排水系统已经老化了。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- 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。
- He's mute on the subject of social system. 他对社会制度的问题保持沉默。
