River lock development is gradually developing towards the high - head lock.

高水头船闸是内河船闸逐步发展方向.

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For high head pressure, the operation of conventional adding sand fracture treatment tech can not fulfilled.

由于施工井口压力高, 常规加砂压裂工艺无法实施作业.

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Generally, small grains have less chalkiness, high head rice rate a nd slight environment effects.

谷粒小粒形可减少垩白, 利于提高整精米率,并减少受环境的影响.

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Zone in Nanjing, a resumption of high - head to the reporters about this year's enrollment.

南京市区一家高复机构负责人这样向记者介绍今年的招生情况.

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