working equation造句

a working equation expresses the unknown quantity in terms of the known ones
分词短语出现在句尾，用逗号隔开，表示伴随情况说明，非常常见。
many scientists and mechanists, such as euler, prager, green, ericksen, hill, truesdell, eringen, made great contribution in this field and developed a general theoretical system . however, there still remain a lot that should be further investigated . this thesis discusses the linear theory of field of elastic solids subjected to additional deformation, and the corresponding virtual work equations and the displacement-based variational principle
本文第一章述评了由euler开创的，经prager、green、ericksen、hill、truesdell和eringen等学者发展并成功应用的附加变形或运动的思想，作为后续各章的基础。
It's difficult to find working equation in a sentence. 用working equation造句挺难的