footages

These were obviously stock footages moving through New York at that period.

这里用的是纪录片里的素材,是当时纽约市的真情实景.

The coring tool is tripped in 26 times, with total coring footages of 205. 71m, recovered core of 168.29m and the average core recovery of 81.81%, the highest in the block.

共下取心工具26次，取心总进尺205.71m，收获岩心168，29m，平均收获率81.81%，达到该区块取心收获率的最高点。

The erosion quantities of self-oscillating cavitating jet are 1~ 2 times of common round jets under the same conditions, which could provide necessary tools in practical application, such as increasing drilling footages and drilling speed etc.

相同条件下，自振空化喷嘴冲蚀质量约为同等条件下锥形喷嘴冲蚀的1～2倍，这为自振空化射流提高钻井速度等实际应用提供了实验依据。