根底浅 meaning in Chinese

have a shaky foundation

Then the article analyses the effecting elements about the economic result of blasting and puts forward some improving measures , and summarizes optimizing model on economic result of blasting both internal and overseas bearing upon . the theory is based on the blasting cost model , which proposed by dr . zhong hanrong . combining with the specialties of water and electricity engineering , starting off through blasting result , it emphasizing considers drilling cost , deep hole bench blasting cost , reblasting cost , and the cost of bottom fleet hole blasting that in mixed loading emulsion explosive blasting
本文在加拿大钟汉荣博士提出的爆破成本模型基础上，结合水电工程的特点，从爆破效果出发，着重考虑了应用混装乳化炸药爆破的钻孔成本、深孔梯段爆破成本、二次爆破成本和爆破后根底浅孔爆破成本，以块度、振动、安全为约束条件，以这四项成本最小为目标函数，广泛收集各种爆破经济技术条件，建立了爆破优化经济数学模型。