The desert of Inner Mongolia is known as the east part of Asia-African desert, its east edge being the dividing line between Asia-African desert and Europe-Asian steppe.
内蒙古荒漠是亚非荒漠的东边部分,其东缘还是亚非荒漠和欧亚草原两大地理带的分界线,在我国动物地理区划中归属于蒙新区的西部荒漠亚区。
The Taibai Mountain may be the northernmost distribution boundary for CBS J.
扩大了部分种类的分布范围,该地区可能为CBSJ种群的最北分布界线。
In this paper,we proved that the cubic system can not exist three separatrix cycles of the tri - curve x3 - 3xy2 - 1 = 0.
本文证明了三次系统不可能同时存在三个三曲线ｘ３－３ｘｙ２－１＝０分界线环。
We obtain a necessary and sufficient condition for the existence of a type of quarticcurve separatrix cycles in the quadratic system.
本义给出了二次系统存在一类四次曲线分界线环的充要条件，此类分界线环的方程为（ｙ＋ｃｘ￣２）－ｘ￣２（ｘ－ａ）（ｘ－ｂ）＝０。
This conclusion corrects a mistaken result(In the planar quadratic system there is not cubic algebraical saddle-nodeseparatrix-loop,in which the author asserrts that quadratic system has no the cubicalgebraical saddle-node separatrix cycle.
本文证明了平面二次系统的三次代数同宿轨线上可以存在鞍结点，并且二次系统可以存在含鞍结点的无返回映射三次曲线分界线环。
fatigue decreased proficiency boundary
疲劳减少熟练分界线
Maritime Military Demarcation Line in the West Sea
西海海上军事分界线
The river is the boundary between the two countries.
这条河是两国的分界线。
Price lining has many advantages:
价格分界线有很多优点：
a line of darker water Beyond the reef.
礁石外深色水域分界线
the boundary between Sweden and Norway
瑞典与挪威的分界线.
designate the boundaries of sth
标出某事物的分界线.
a line of demarcation between two rock strata.
两个岩层间的分界线
This borderline is indefinable.
这条分界线难以确定。
Something, such as a boundary or partition, that serves to divide or keep separate.
分隔物，分界线分界物或分割物，用作分配或分类
"demarcation,also demarkation:The setting or marking of boundaries or limits."
分界线:边界或限制的设定或标记.
The setting or marking of boundaries or limits.
分界线边界或限制的设定或标记
Definition of the management boundary between river and sea in Ningbo
宁波市陆海及河海管理分界线的界定
a vertical line marking the boundary between musical bars.
音乐小节之间标志分界线的垂直线。
separation by the creation of a boundary that divides or keeps apart.
产生分界线的分离用来划分或隔开。
The line or frontier area separating political divisions or geographic regions; a boundary.
边境政治划分或地理区域的分隔线或边界；分界线
a person who fixes the boundaries of land claims.
划分土地权利分界线的人。
There are no indecisive boundaries between the two opinions.
这两种意见界线分明。