Sequences in second language acquistion什么意思

蜗牛在深圳tt2022-10-04 11:39:541条回答

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Sequences and Series (002) Sequences and Series (002) The possitive numbers a, b and c are consecutive terms in a geometric progression; express b in terms of a and b. Deduce that lga, lgb, and lgc are consecutive terms in an arithmetic progression. 骂我的全数奉还1年前0: 共回答了个问题 | 采纳率

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How many different 6-letter sequences are there that consist How many different 6-letter sequences are there that consist of 1 A,2 B’s,and 3 C’s A.6 B.60 C.120 D.360 E.720 liuyuyang20051年前2: luckzh 共回答了19个问题 | 采纳率78.9%

6!/2!/3!=60
就是六个全排列去掉两个完全一样的B的排列、三个完全一样的C的排列

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英语翻译原话是：A small proportion of sequences were out-of-frame in 英语翻译 原话是：A small proportion of sequences were out-of-frame in both types of follicle from infected birds,but in none from the uninfected bird. y5385405841年前4: dd小猪猪共回答了21个问题 | 采纳率90.5%

受感染鸟群的两类囊泡均出现连续的小部分紊乱,但未受感染的鸟群却没出现此类情况.

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GN18 sequences是什么? GN18 sequences是什么? As lentivirus pseudotyped with VSV-G is capable of infecting human cells we strongly recommend BLAST searching the GN18 sequences to both verify that your sequence is unique and to determine if there are potential human targets. 另外请问，这个GN18是干什么用的？ wbd7081301年前1: ff鱼爱情共回答了20个问题 | 采纳率100%

GN18 sequences就是GN18这个基因的序列.

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英语翻译The cDNA and gene sequences currently available includes 英语翻译 The cDNA and gene sequences currently available includes 31,741 unique sequences assembled from 217,519 high quality 454 sequencing reads.这句怎么翻译?尤其是high quality 454 sequencing reads具体怎么翻译 飞心11年前1: 秋后的枫叶共回答了14个问题 | 采纳率71.4%

目前的cDNA和基因序列,权威的454测序仪了测试了217519种,得到唯一序列组装有31741种.

454测序仪是一个专有名词,中山大学有,开机一次大概要16万.

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什麽是Arithmetic and Geometric Sequences 什麽是Arithmetic and Geometric Sequences 请解释一下两者的分别... 可以的话请例举一些例子, shamo545f1年前1: cangkong 共回答了14个问题 | 采纳率92.9%

（1）We will call a sequence an arithmetic sequence if there is a common difference
意思是我们称一个有相等差别的数列为算术数列,其实说白了就是我们的等差数列
如1,3,5,7,9.
（2）A Geometric Sequence is a sequence which the ratio of the common terms is equal.
The general term is
an = a1 * r^（n-1）
意思是:"几何数列就是数字间是同等比例的顺序"
说白了就是我们常说的等比数列
如：3,6,12,24,48...
就是3*2^（n-1）
参考资料里非常详细,不过是英文版的,有不明白的请来信息

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