指空

最后，代码验证soleSourceAuth或sourceAuth元素是否存在并具有一个有效值（在本例中是指非空字符串）。

Finally , the code verifies that either a soleSourceAuth or a sourceAuth element is present and has a valid value , which in this case is not an empty string .

他指了指空瓶子，女服务员立即重新拿了一瓶。

He pointed at the empty bottle and the waitress quickly replaced it

21这一根柱子高十八肘、厚四指、是空的.围十二肘。

Each of the pillars was eighteen cubits high and twelve cubits in circumference ; each was four fingers thick , and hollow .

分块TCAM是指把TCAM存储空问划分为若干个小块，每次路由查找只到其中一个分块进行匹配查询，以降低查找能耗。

Partitioned TCAMs mean to divide the TCAM storage space into several sub-blocks , and each routing lookup only search one block of the sub-blocks to reduce the routing energy consumption .

所谓内管做行星运动的环空是指：构成环空的内管不仅绕其自身轴线自转，而且还同时绕环空外管的轴线公转。

The annulus in which the inner cylinder executes a planetary motion means that the inner cylinder not only rotates about its own axis , but also rotates about the axis of the outer cylinder in the annulus .