The project is regressing because of constant changes in direction.

由于方向不断变化，项目在倒退。

The equilibrant must be equal in magnitude but opposite in direction.

平衡力的大小必须相等但方向相反。

Once again her life felt lacking in direction.

她的生活似乎又没了方向。

Radiation is zero in direction along the line of a straight line current.

直线电流之沿线方向无辐射.

Radiation is zero in direction along the axis normal to the plane of a loop current.

环形电流面之垂直轴方向无辐射.

The change in direction is welcome but will not work wonders quickly.

变化的方向受人欢迎，但是不会马上创造奇迹。

All sub-assemblies can be oriented in direction as required by the customer.

所有子配件均可按用户要求的方向进行定位。

Refraction is the change in direction of a wave due to a change in its speed .

折射是一种改变波的方向，因为它改变了它的速度。

IMPORTANT ! Flow must always be in direction of arrow on valve body.

重要提示! 水流流向必须与阀体上的箭头方向一致.

These changes in direction and velocity are the means of locating discontinuities.

这些在方向和速度上的变化是找出裂痕的方法。