flat surface line design 平面线形设计
highway flat surface line 公路平面线形
highway flat surface line design 公路平面线形设计
What it says on each small flat piece — it says that the line integral along say, for example, this curve is equal to the flux of a curl through this tiny piece of surface.
它可以对任一个小平面使用-，比如说对于这条曲线的线积分，等于通过这个曲面的旋度通量。
The rocks, some as heavy as 250lbs, move unaided in bizarre straight line patterns across the ultra-flat surface of the valley.
它们在死亡谷超平的地面上沿着诡异的直线移动，其中一些岩石重达250磅。
Process with flat surface the clear and definite dividing the line the bore the coarseness processes to process with the nicety the stage to guarantee their process the precise degree.
将孔与平面的加工明确划分成粗加工和精加工阶段以保证它们的加工精度。
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