combination 中文
EN


名结合, 联合, 化合 维組合
- 在組合數學,一個集的元素的組合(英语:Combination)是一個子集。S的一個k-組合是S的一個有k個元素的子集。若兩個子集的元素完全相同並順序相異,它仍視為同一個組合,這是組合和排列不同之處。
- 對於有n個元素的集S,當中k-組合的數目表示為二項式係數C(n, k)。
- 計算從有n個元素的集S中,選取k個不同元素組成的有序列的方法的數目,即是k的排列的數目,P(n,k)。
- 計算同樣的k個元素不同排列的數目,P(k,k)。這就是它們在上面的重複出現的次數。排列的數目除以每種組合重複出現的次數,就得到C(n,k):
- 。
- 根據P(n,k)的定義:
- ,
- 。


- 名词 (Noun)PLcombinationsPREcom-SUF-ation
- The act of combining, the state of being combined or the result of combining.
- An object formed by combining.
- A sequence of numbers or letters used to open a combination lock.
- (mathematics) One or more elements selected from a set without regard to the order of selection.
- An association or alliance of people for some common purpose.
- (billiards) A combination shot; a billiard; a shot where the cue ball hits a ball that strikes another ball on the table.
- motorcycle and sidecar.
- The act of combining, the state of being combined or the result of combining.
- 更多范例
- 用于句中
- Hence, the present study was undertaken to assess the neuroprotectivity of spirulina alone and in combination with amantadine in experimental rat induced Parkinsonism.
- The patient was managed by a combination of preoperative and postoperative antihelminthic therapy along with laparotomy, cyst deroofing, toileting and omentoplasty.
- Exterior shading devices can be either horizontal, vertical, or a combination of horizontal and vertical called “egg crates.”
- 用于句中
Definition of combination in English Dictionary
- 词类阶层 (Part-of-Speech Hierarchy)
- 名词
- 可数名词
- 可数名词
- 名词
资料来源: 维基词典