大家都搜：
信封实用程序
1、envelope sizes───信封尺寸
2、prc envelope───中华人民共和国信封
3、setup utility───设置程序
4、laborsaving utility───省力实用工具
5、envelope───n.信封，封皮；包膜；[天]包层；包迹
6、utility vehicle───n.多用途运载车
7、fertilization envelope───受精囊
8、diffraction envelope───衍射包络
9、flash utility───闪存实用程序
1、relates to a double cladding layer and double envelope layer spherical fertilizer, which relates to a novel slow release fertilizer and belongs to the technical field of fertilizers.───双包裹层、双包膜层球形肥料涉及一种新型缓效肥料，属于肥料技术领域。
2、Compared with the existing envelope, the utility model has the notable advantages of convenient operation and simple operation.───现有的信封相比，具有使用方便，Cao作简单等显著优点。
3、Existing resources optimization configuration method basically for marginal utility law, most superior weighting combination method, DEA (data envelope analysis) method.───目前评价资源优化配置的方法有边际效用法、最优加权组合法、数据包络分析方法。