我这两天收到一个客户图纸，有一行描述是1 1/2"*3/16" BEARING BARS ON 1 3/16" CTRS. AND CROSS ROD ON 4" CIRS. CARBON STEEL-NO FINISH-NO BAND(19W4) 19.19"*44.65" SPAN WITH 3/4" #9 SS EXPANDED METAL(FLATTENED)(.012THK.) 44.65" SWD*19.19" LWD WELD TO TOP IF GRATING WITH LWD PERPENDICULAR TO SPAN.
请问这个具体是什么意思？
