查询词典 triangular numbers

The measurement and counting of gas is a hard nut to crack and it requires the recording of numerous burette numbers in certain time and the counting of the loss of gas based on some of the recorded numbers.

煤炭的瓦斯测量需要记录许多个时间点及对应的量管读数值，然后选取部分点的测量值参与瓦斯损失量的计算。

Figure 2-7 the keyboard letter keys --letters numeric keys --numbers punctuation keys --comma, period, semicolon special keys control keys arrow keys Caps Lock key --function keys A computer keyboard contains keys that allow you to type letters of the alphabet, numbers, spaces, punctuation marks, and other symbols; A computer keyboard also contains special keys that allow you to perform specific functions on the computer.

计算机键盘包括字母键，数字键，空格键，标点符号键和其它符号键。计算机键盘还包括在计算机上执行特殊功能的特殊键。

T: Now listen to 2 and compare the cardinal numbers and the ordinal numbers.

2找四个学生到黑板上写下有特殊变化的序数词。

It opens a field for application of ordinal numbers, but it is not open to application of cardinal numbers and arithmetical operations based on them.

如果有人拿三个戏剧Aida、Falstaff和Traviata的入场券给我选择，如果只让我选一张的话，我就选Aida，如果我可再选一张的话，我就拿Falstaff，这就是说：在这种情形下，我是把Aida看得优於Falstaff，Falstaff优于Traviata。

The U.S. uses ordinal numbers for naming grades, unlike Canada and Australia where cardinal numbers are preferred.

美国采用序数来命名年级，不象加拿大和澳大利亚那样采用基数。

T: Now listen to 2a and compare the cardinal numbers and the ordinal numbers.

2教师出示写有100以内基数词和序数词的小黑板或数字挂图或幻灯片，并播放录音，要求学生边听边注意比较基数词和序数词的异同。

The date can use ordinal numbers or the cardinal numbers.

日期可以使用序数词，如：1st， 2nd， 3rd 等，也可用基数词，如：1，2，3等。

These are signs of wear and tear and accidents. Even though the carfax report may come clean, try to look out for odometer tampering, the symptom are the white lines between the numbers that do not line up, or there is vibration of the 1/10-mile numbers while the car is moving.

这些都是有出过事故的特徵即使行车报告一切ok还是要去看看里程数看看汽车在行驶每1/10浬的时候表上数字的震动情形

The computable numbers form a real closed field and can be used in the place of real numbers for many, but not all, mathematical purposes.

在可计算数形成一个真正的封闭领域，可用于取代真正的数字对许多人来说，但并非所有数学的目的。

In Chapter 5, in geometric perspectives, the geometric properties of complex numbers are explored, including complex plane, four arithmetic operations of complex numbers and nth root of a complex number. It is also exemplified how these geometric properties are applied to solving the problems of plane geometry.

第五章从几何的观点探索复数的几何性质，包括复数平面、复数的四则运算及复数的n次方根，并举出几个例子，说明这些几何性质如何应用在解决平面几何的问题上。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。