这可能是有迹可寻的条件，他的年龄。
宇宙其他地方都找不到生命的 迹 象，只有地球才具备维持生命所需的一切条件。
Nowhere else in the physical universe has life been found. Only on planet Earth have just the right conditions existed.
在一定条件下，遥感图像上可以观测到舰船的尾迹或自然界的内波现象。
In some condition the wake of ship or the natural interwave can be observed in remote sensing imagery.
为减少尾迹数值耗散和便于添加上述边界条件，采用了嵌套网格方法。
Embedded grids are adopted to weaken the numerical diffusion of the wake and to apply the above boundary conditions.
然后在环量收敛与尾迹收敛的条件下，计算拉力以满足拉力收敛准则。
Then on the condition of circulation and wake geometry convergence, the rotor thrust is calculated to satisfy convergence criterion of thrust.
为了充分考虑旋翼尾迹对流场的影响，采用周期性边界条件和由动量理论导出的远场边界条件。
To incorporate the important effects of the rotor wake, the far-field boundary condition derived from the rotor momentum theory and the cyclic boundary condition have been used.
在高速流动条件下，叶栅损失主要是吸力面边界层径向串流及其尾迹。
Under high velocity flow conditions, cascade losses are mainly caused by radial drift of the boundary layer along the suction surface and by blade wakes.
在水平轴风力机模型不同尖速比条件下，利用旋转单斜丝热线在风轮下游进行尾迹流场速度测量。
An experimental investigation into the properties of the wake behind a horizontal-axis wind turbine (HAWT) rotor is carried out at model scale, using a single slanted hot-wire probe.
讨论线性函数与矩阵的迹的关系，给出了一个线性函数是矩阵的迹的若干充要条件。
This paper studies relation between the linear function and the matrix trace, and obtains a number of necessary and sufficient the condition that a linear function is trace of matrix.
利用球坐标系中的二维潮波方程组，以T/P卫星沿迹分析结果为开边界条件的边值法，计算了黄海中的一个四边形区域。
Under the spherical coordinate, the boundary value method using the along track estimates of(T/P) satellite as open boundary conditions is applied to establish tide models in the Yellow Sea.
利用球坐标系中的二维潮波方程组，以T/P卫星沿迹分析结果为开边界条件的边值法，计算了黄海中的一个四边形区域。
Under the spherical coordinate, the boundary value method using the along track estimates of(T/P) satellite as open boundary conditions is applied to establish tide models in the Yellow Sea.
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