关于mortars的百科

• mortars造句怎么写

• Testingofmortarscontainingmineralbinders;Thearmywasfiredbymortars.testingmethodfortensilestrengthofhydrauliccementmortarsSome[ofthemortars]hitinourstreet.Manyofthosehurt,hesays,havesustained"catastrophic"injuriesfrommortarsfiredintoresidentialareas...
• 2017-09-2025430