求翻译：3. 研发楼屋顶女儿墙上采用截面积不小于50mm的热镀锌栏杆作为接闪带，并与屋面明敷的25×4热镀锌扁钢组成不大于10m×10m或12m×8m的接闪网格，作为接闪器。接闪带支持卡、预制接闪带混凝土支座直线段间距为1.00m，转角处为0.25m。屋面 上所有的金属构筑物、金属构件、金属烟囱、设备的金属外壳均应与屋面接闪网格可靠连通成连续的电气通路。是什么意思？

R & D building rooftop daughter wall cross-sectional area of ​​not less than 50mm hot galvanized railings as lightning belt, and for surface and roof 25 × 4 hot galvanized flat steel is not greater than 10m × 10m or 12m × 8m the lightning grid, as air terminals. Then flash with a support card, p

3.research and development building roof with her daughter on the wall is not less than 50 mm² of hot dip galvanized fence as a flash, and the dressing of the roof with 25 X 4 Hot dipped galvanised flat steel composition is no more than 10M x 10M or 12M x 8m to the grid, as a flash to FLASH. With su

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3. research and development building roof parapet with cross-sectional area of not less than 50mm on hot-dip galvanized railings as a Flash and with the roof out deposit consisting of 25x4 hot-dip galvanized flat steel Flash grid is not greater than 10mx10m or 12mx8m, as the Flash. Flash supports pr

3. On the research and development building roof parapet wall uses the cross-sectional area not to be smaller than the 50mm pot galvanize parapet achievement to meet dodges the belt, and 25×4 the pot galvanize flat steel composition is not bigger than with roofing Ming Fu 10m×10m or 12m×8m meets do