基于一维静止激波理论和理想“等效气体”模型，实验确定了粒子的有效阻力系数。
On the basis of one-dimensional stationary shock theory and perfect "effective gas" model, the effective drag coefficients are determinated experimentally by pressures of relaxation zone.
很明显，因此，我们应选择舵形象和规模，让有效指导之间，直线稳定性和阻力最好的折衷办法。
Obviously, therefore, we should select the rudder profile and size that gives the best compromise between effective steering, straightline stability and drag.
趋势分析使我们能够更有效的贸易市场，明确界定各级的支持和阻力。
Trendline Analysis allows us to more effectively trade the market by clearly defining levels of support and resistance.
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