刚好在450英尺的等高线之下有3个缓坡。There were three moderate climbs to just below the 450 feet contour.等高线是用等间距图解描述构造形态的.Contours are graphic expressions with uniform spacing depicting a structure's character.正射摄影象片一般不带像地图所表示的等高线....
Automatic Gain Control ( AGC ) is widely used in communication. radar & amp ; instrumentation systems.自动增益控制 ( AGC ) 环路广泛地应用于通信、雷达 、 仪器系统.Self - service ( Buffet ) Chinese & amp ; Western dishes offer you a easeful enjoy...
在试验段中装有两个平行六面体试件.Two sample parallelepipeds are located in the test section.我们现在在三维应力分析中采用四面体单元和六面体单元.We can now use tetrahedron and hexahedron elements in three - dimensional stress analysis.同高的平行六面体(的体积)之比等于其底面(积)之比.Pa...