The farm covers an area of 50 hec.

这座农场占地50公顷。

The vineyard extends across 15 hec.

这个葡萄园占地15公顷。

The new park will span over 30 hec.

新公园将占地超过30公顷。

They planted wheat on 20 hec of land.

他们在20公顷的土地上种植了小麦。

The forest fire destroyed 100 hec of woodland.

森林火灾烧毁了100公顷的林地。

Let's do together to creat a real HEC.

来这把，让我们共同创造一个真正的HEC。

The HEC - Ab in the serum was tested.

对血清进行HEC-Ab的检测.

The refining process of high-substitution hydroxyethyl cellulose (H-HEC) was researched.

研究了高取代度羟乙基纤维素（H-HEC）的精制工艺。

After completing his studies at HEC, Mr Agon joined L'Oréal in 1978.

安巩先生自巴黎高等商学院（HEC）毕业后，于1978年加入欧莱雅集团。

The CLP and HEC transmission systems are interconnected by a cross-harbour link.

中电与港灯的输电系统，由横跨海港的电缆连接。