数据类型

In computer science, a value is a sequence of bits that is interpreted according to some data type.

在计算机科学中，一个值就是根据特定的数据类型解释的一个位序列。

B. Declaration of primitive types such as boolean, byte and so on allocates memory space for the variable.

B。 对原始数据类型例如boolean，byte的变量的声明将为之分配内存空间。

This paper introduced an new instrument which was used in thermal hazard analysis- accelerating rate calorimeter.

本文介绍了一种新型热危险性分析仪器———绝热加速量热仪的设计原理和内部结构，运行模式以及所能获得的温度、压力和最大温升速率时间等数据类型。

Templates let us write a single class or function definition that can be used on a variety of types.

使用模板可以编写一个类定义或函数定义，而用于多个不同的数据类型。

Numeric values that are equal (when pitted against each other using a comparison operator) hash to the same value.

大小相同的数值，当用比较操作符进行比较时，它们的哈希值是相同的，虽然它们的数据类型不同。

Compilers assign different amounts of memory to store each of these types of data.

编译器分配不同的存储容量来存储每一种数据类型。

Python knows a number of compound data types, used to group together other values.

Python 已经有了几个复合数据类型，用于组织其它的值。

Python knows a number of compound data types, used to grouptogether other values.

python 已经有了几个复合数据类型，用于组织其它的值。

Python knows a number of compound data types, used to group together other values. The most versatile is the list , which can be written as a list of comma-separated values between square brackets.

Python 了解几种复合数据类型，用于分组其它值，最有用的是* list*，可以写做中括号中的一列用逗号分隔的值。

The optimization methods of database SQL query were studied and some available query optimization Methods were given out as follows: The incompatible data type should avoid to be used; More redundancy search parameters should be given as join condition in join query; In some condition, the number of note hitted to target was estimated by optimizing implement using the average density; Some other maths operating symbol should avoid to be used as condition parameters in WHERE clause; Some operating symbol and its sentence should avoid to be used also; When the cluster function was used,the WHERE clause should be paied attention to more,and so on.

作者单位：（重庆工学院商贸信息学院，重庆 400050）摘要：数据库SQL查询语句的优化，须注意：避免使用不兼容数据类型；连接查询中应多给连接条件提供一些冗余的搜索参数；某种条件下优化器只能使用其平均密度以估计命中的记录数；避免对WHERE子句中条件参数使用其它数学操作符；避免使用某些操作符及相应语句；聚簇函数的使用应注意WHERE子句。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。