The DOUBLE type can also be referred to as DOUBLE PRECISION although it isn 't clear why you would want to type the extra word every time you need a double-precision number .

DOUBLE 类型也可以表示为 DOUBLE PRECISION，虽然为什么在需要双精度数字时要输入额外的单词，原因不明。

The temperature control is achieved by the microcomputer intelligent type double display and PLC temperature controller which can be set up thus the temperature control precision is reliable .

控温采用可设置的微电脑智能 型 双显及可编程序控温仪表控温，控温 精确可靠；