完

Construction in progress

未完工程

156 未完工程及预付购置设备款 construction in progress and prepayments forequipment | 1561 未完工程 construction in progress | 1562 预付购置设备款 prepayment for equipment

maximum price

最高價格 (輸入完後按下set鍵)

- Minimum Price:最低價格 (輸入完後按下set鍵) | - Maximum Price:最高價格 (輸入完後按下set鍵) | Sell分頁

perfect number of the second kind

第二类完全数

perfect number 完全数 | perfect number of the second kind 第二类完全数 | perfect set 完备集

perfect number

完全数

完全数(Perfect number)是一个困扰不少数学家多年,使他们花了不少时间和精力的数,甚至在今天借助高速电子计算机亦未能彻底回答前人所遗留下来的这个难题.完全数是由希腊数学家欧基里德(Euclid)最先提出的,其定义是:如果有一个数,

perfect number

完数

/一个整数为完数(perfect number)的条件是,其因子(包括1,但不包括该数本身)的和等于该数. 例如28是一个完数,因为,28=1+4+7+2+14.

I read a book yesterday

(书已看完)

1.I read a book yesterday. (书已看完) | I was reading a book yesterday.(书尚未看完) | 2.The guests arrived.(客人已到)

I read a book yesterday

(书已经看完)

I had learned French during my holiday. (强调学会了) | I read a book yesterday. (书已经看完) | I was reading a book yesterday. (书尚未看完)

I read a book yesterday

(书已观完)

1.I read a book yesterday. (书已观完) | I was reading a book yesterday.(书尚未观完) | 2.The guests arrived.(客人已到)

recompletion

重新完井

recompletion job 再完井作业 | recompletion 重新完井 | recompounding 重新组合

recompletion interval

重新完井井段

recompility 重新编译性 | recompletion interval 重新完井井段 | recompletion job 再完井作业

photoperiodic response：光周期响应

photoperiodic induction 光周期诱导 | photoperiodic response 光周期响应 | photoperiodism 光期性

Multi-Variate Statistical Analysis：多元统计剖析

311. 多项距阵 Multi-Nominal Matrix | 312. 多元统计剖析 Multi-Variate Statistical Analysis | 313. 发电厂 Power Plant