Seven of the ten highest-scoring school districts in the state of São Paulo had a private education company, COC, to manage their classrooms.

在圣保罗州，十个高分学校地区中的七个拥有私立教育公司（COC），来管理他们的各个班级。

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COC is a relatively new class of polymers when compared to polypropylene and polyethylene.

COC是一个相对较新级别的聚合物，与聚丙烯和聚乙烯相比。

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The contents of colloidal trace metals were mainly influenced by the factors of COC content and total trace metals, but were all affected by the wind-wave disturbance action fundamentally.

胶体态痕量金属的含量主要受COC含量、痕量金属总量等因素的影响，但归根结底均受制于风浪的扰动作用。

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With five of the 13 venues requiring a final inspection by World Cup tournament director Professor Ratnakar Shetty and the central organising committee (COC), the ICC's report approved Mumbai and the Sri Lankan venues - Colombo's R Premadasa Stadium, Hambantota and Pallekele - subject to minor finishing work to be completed within 14 days.

BBC: Cricket World Cup: Kolkata not ready for India-England