boundary

National boundaries are becoming increasingly meaningless in the global economy..在全球经济中，国界已经变得越来越没有意义。

We would need their agreement to build outside the city boundary ..我们在市界以外的地方建房需要他们批准。

The stream curves round to mark the boundary of his property..小河打了个弯，为他这块地划出了边界。

Anything that crosses the boundary of a black hole cannot get back..任何物质只要跨越黑洞的界线就再也无法出来。

We walked through the churchyard towards the boundary wall ..我们穿过教堂墓地，向院墙走去。

The property’s boundary line is 25 feet from the back of the house..这块地产的边界线在屋后25英尺的地方。

boundary disputes between neighbouring countries.邻国之间的边界争端

boundary condition,边界条件，界面条件

boundary value,边值；边界值

boundary layer,边界层

boundary element method,边界元法；边界要素法

grain boundary,[冶]晶界

boundary line,边界线；疆界线

moving boundary,移动边界；移动界面

turbulent boundary layer,湍流边界层；紊两面层

boundary surface,界面；边界面

outer boundary,外边界

boundary point,边界点

natural boundary,自然边界

plate boundary,板块边缘，板块边界

crystal boundary,晶界；晶体间界

lower boundary,下边界

boundary lubrication,边界润滑

phase boundary,相界面；相界线

boundary layer flow,边界层怜；边界层流动

upper boundary,上边界

boundary layer separation,边界层分离（现象）