Ammonia corrosion of condenser copper tubes in the air removal section cannot be avoided as a result of ammonia collection and existence under super cooling condition.

由于氨的聚集与氧的存在，在凝汽器空冷区出现过冷度的情况下，铜管的氨腐蚀是不可避免的。

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Super-thick oxide films on copper and copper alloy parts heat-treated at high temperature make it very difficult for chemical polishing of the parts.

铜及铜合金制品经高温氧化后氧化皮过厚，进行化学抛光处理难度较大。

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The heat analysis of binary current leads which consist of copper current lead and high temperature super conducting was made on condition that the lead was cooled by two-stage refrigerator.

对在两级制冷机传导冷却下由高温超导和铜组成的二元电流引线进行热分析。

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Scientists used the microscope to control a tiny, super-sharp needle along a copper surface, IBM said.

WSJ: IBM makes tiny movie by pushing molecules around

These types of managers use super liquid futures contracts to play everything from soy beans to natural gas, and from copper to sovereign debt.

FORBES: Play It As A Recovery Or A Bubble? Both.