Reference checking tool is an important tool for science workers and also an important source for them to obtain scientific information.
文献检索工具是科技人员研究活动的重要文献调研工具，是获取科技信息的重要来源。
Careful reference checking and a site visit to other organizations that are actually using and customizing the forms with XForms development tools is an obvious way to vet the vendors.
仔细阅读参考手册，访问确实用x Forms开发工具使用和定制表单的其他企业的网站，也有助于甄别供应商。
It is transparent because the business-logic code contains no reference to contract checking; it is absolutely unaware of it.
它是透明的，因为业务逻辑代码不包含对契约检查的引用，前者绝对不知道后者。
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