空洞
空洞(Voids): 主要是因为助焊剂中的溶剂或是水气快速氧化,且在焊料固化前未即时逸出所致。
无效的
(三)合同可以是无效(VOID)的,也可以半无效的(VOIDABLE)
The Vocabulary of Interlinked Datasets (voiD) is an RDF vocabulary, and a set of instructions, that enables the discovery and usage of linked data sets. A linked dataset is a collection of data, published and maintained by a single provider, available as RDF on the Web, where at least some of the resources in the dataset are identified by dereferencable URIs.