The flight failed to carry out the cloud seedingoperation.
这次飞行未能进行播云作业。
2
Some scientific bases are provided for studying the potentials of convective cloud precipitation and for cloud seedingoperation during the summer autumn period.
为南方夏秋期间对流云降水潜力研究和科学实施人工增雨作业提供一定依据。
3
The operating and commanding system of cloud seedingoperation is a very important condition for rocket and artillery rain enhancement and hail suppression to gain satisfactory results.