useful arts造句

• I have devoted myself to industry ; i study the useful arts
  我致力于实业，我研究各种实用的工艺。
• To promote the progress of science and useful arts , by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries
  保障著作家和发明家对各自著作和发明在限定期限内的专有权利，以促进科学和工艺的进步
• We are instructed , for instance , in manual exercises , in the fine and useful arts , in trades , and in ways of business ; for these are methods , which have little or no effect upon the mind itself , are contained in rules committed to ( 3 ) memory , to tradition , or to use , and bear upon an end external to themselves
  例如，老师教我们学做手工作业，学美术和实用美术，学贸易，学经商之道；因为这些都是方法，对心智没有作用或作用很小，包含在记忆、传统或使用的规则当中，和它们外在的目的相关。
• Abstract : casting for denture restorative trame needs a high quality of equipment , the complex materials , a degree of difficult technique and the useful art . thus it has some difficulty of casting sharpeless and drawbacks ' caused at work . the mutual relations of casting alloy function and casting sprue system inquired , then the measures to solve this casting sharpeless and drawback were provided
  文摘:为解决铸造牙科修复支架过程中因各种原因造成铸件变形或缺陷，着重探讨了因铸造合金的性能与浇注系统对铸件的影响，并就解决铸造变形与缺陷提出了相关解决办法。