The speed fields and circulationdistribution of wing-pylon combination, and the surface pressure distributions of the stores are given.
给出了机翼—挂架组合体的速度场，环量分布和外挂表面的压强分布。
2
The extreme difficulty in tracing the manufacturing and distribution channels of counterfeit medicines makes their circulation on markets difficult to stop.
由于在追查制造假冒药品及其分销渠道上困难重重，因而难以阻止假冒药品在市场上的流通。
3
Lagardere's distribution division, for example, which ships printed material out to retail stores, has fixed costs and direct exposure to tumbling newspaper and magazine circulation.