Concentric from habitat, grief to his death.什么意思?

Concentric from habitat, grief to his death.什么意思? concentric machining是什么意思 concentric form habitat,gir to his only concentric tool marks allowed on gasket surface concentric reduction什么意思?（机械上的） 9.The documentary shows the Asian tiger in its _______________(nature) habi 英语翻译1.free from crakes,fin or other defects2.I.D.to be concentric with O.D with in 3.0mm3.C 0.80-0.90 Mn 12.00-14.00 Si 0.15-0.40 P,S830MPa YS>230MPa HB180-245下面还有third angle projection drawnall dimension are in MM design(unless other two enormous concentric rings,impact basins are found on Callisto.5097 two enormous concentric rings,impact basins are found on Callisto.5097 BLIND,CLASS150 RF,304LSS ASTM A182-F304L,ASME B16.5,GASKET FINISH TO BE OF CONCENTRIC SERRATED FINISH OF 125-250 AARH中的GASKET FINISH TO BE OF CONCENTRIC SERRATED FINISH 铝合金挤压棒客户要求挤压棒concentric ring（CR）：not allowed completely请问具体是什么意思，在线等！急 impact craters and associated concentric rings are about the only features to be found on Callisto.5097 From:$ from from from From From from