datum line 是什么意思

	1.	Fig. 3-13 gives a suggested buffering arrangement for the data lines . 图313示出了一种缓冲数据线的方案。
	2.	Future systems will require at least 16 data lines and perhaps as many as 24 address lines . 未来的系统将需要至少16条数据线和大约多达24条地址线。
	3.	Right - click the data line in the graph and select delete 右击关系图中的数据行并选择“删除” 。
	4.	Fig . 3 - 13 gives a suggested buffering arrangement for the data lines 图3 ? 13示出了一种缓冲数据线的方案。
	5.	Fig . 3 - 13 gives a suggested buffering arrangement for the data lines 图3 13示出了一种缓冲数据线的方案。
	6.	A line of punch positions parallel to the y datum line of a punch card 和卡片的y基准线平行的一行穿孔位置。
	7.	Audio data line 音频数据线
	8.	Improving the signal quality of a voice - grade data line to improve the speed or accuracy 改善声音信道数据线的信号质量以提高速度或精度。
	9.	You might think of a source control binding as representing the single data line created for the house 您可以将源代码管理绑定看作表示为房子创建的单一的数据线。
	10.	Incidentally , mcg has always been engaged in coordinating activities within our data line protectors 顺便说，对我们的数据线防护器， mcg一直从事着协调配合的工作。

datum line是什么意思