不应有的损失 meaning in English

unwarranted loss

In view of the fact that your violation of the contract has caused us undeserved losses , we regret to say that we have canceled the contract , and we reserve the right to claim for our losses
鉴于你方违约造成我方不应有的损失，我们已遗憾的撤销此约，并保留对我损失的索赔权。
Review is made on the results of two designs for the high pressure pregrouting at the stopes of the main shaft and the auxiliary shaft in an iron mine . one design took the geological characteristics as the basis and was strictly and scientifically made . with proper construction technical measures , it brough both good technical and economical effects to the grouting engineering . the another design was made in no consideration of practice . as a result , it brought avoidable losses to the engineering . its failure cause are analyzed
评述某铁矿主副井工作面高压预注浆的两种设计结果：一是以地质特点为依据，严格按科学设计，施工技术措施得当，给注浆施工带来了良好的技术经济效益；二是未从实际出发进行设计，给工程造成不应有的损失，剖析其失败原因。