[ 复数 barriers ]
...。弧段权值可以是任意类型,如经过该弧段所需的时间、该弧段的长度等,也可以是对多个因素进行加权得到的权值。例如,供水管网可以应用水压或管长作为权值。详细介绍请参阅第 6 章。 障碍(Barrier):分为障碍结点和障碍弧段。一旦被指定为障碍,意味着该结点或弧段失效,是禁止通行的。
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...minecraft我的世界中的屏障(Barrier)是一个拥有混合属性的隐形方块。所有的依靠性方块都可以放置在屏障上,如活板门或红石粉,但它会让光穿过并渲染相邻的表面。
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trade barrier [贸易] 贸易壁垒 ; 商业联合 ; 商贸壁垒
great barrier reef 大堡礁 ; 澳大利亚的大堡礁 ; 年夜堡礁
noise barrier 隔音屏障 ; 隔声板 ; 隔音墙
sound barrier [航] [声] 声障 ; 隔声板 ; 声音屏障
tariff barrier [税收] 关税壁垒 ; 关税普遍优惠制 ; 关税 ; 关税障碍
Coulomb barrier 库仑障壁 ; 库仑势垒 ; 库伦势垒
Schottky barrier 肖特基势垒 ; 肖脱基势垒 ; 萧特基位障 ; 萧特基能障
safety barrier 安全屏障 ; 安全栅 ; 安全势垒 ; [航] 停机拦截网
N-COUNT A barrier is something such as a rule, law, or policy that makes it difficult or impossible for something to happen or be achieved. 障碍
Duties and taxes are the most obvious barrier to free trade.
关税及其他各种税是自由贸易最明显的障碍。
N-COUNT A barrier is a problem that prevents two people or groups from agreeing, communicating, or working with each other. 障碍; 隔阂
There is no reason why love shouldn't cross the age barrier.
爱情没有理由不应跨越年龄障碍。
She had been waiting for Simon to break down the barrier between them.
她一直在等着西蒙来破除他们之间的隔阂。
N-COUNT A barrier is something such as a fence or wall that is put in place to prevent people from moving easily from one area to another. 栅栏; 围墙
The demonstrators broke through heavy police barriers.
示威者们冲破了警方的重重关卡。
N-COUNT A barrier is an object or layer that physically prevents something from moving from one place to another. 屏障
A severe storm destroyed a natural barrier between the house and the lake.
一场猛烈的暴风雨摧毁了房屋和湖泊之间的天然屏障。
N-SING You can refer to a particular number or amount as a barrier when you think it is significant, because it is difficult or unusual to go above it. (数量) 大关
They are fearful that unemployment will soon break the barrier of three million.
他们担心失业人数不久将突破300万大关。
I realized I had to surmount the language barrier.
我认识到我必须得克服语言障碍。
The Yangtze river is a natural barrier to the north-east.
长江是东北方向的一道天然屏障。
Ozone is the earth's barrier against ultra-violet radiation.
臭氧是地球防止紫外线辐射的屏障。
Some places like Australia's Great Barrier Reef and Montana's Glacier National Park are threatened by the effects of climate change.
VOA: special.2009.04.22
So, clearly, if we remove this barrier mixing takes place and obviously you know that that happens from lots of experience.
所以很明显,如果我们拿走隔板,气体混合就会发生,我们从大量的实际经验中就可以知道这些。
This cell can only be an effective barrier if there's no way to get past it.
这些细胞只有密不透风,才足以形成一道屏障
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