单词	混合性粉尘
释义	混合性粉尘医mixed dust
随便看	fastening of typewriters typewriter table fastening plate Fastening position fastening rail chairs directly fastening rail chairs directly on masonry fastening rails on plate fastening rails on plateslabs fastening rails on sleepers fastening railway sleepers directly fastening ring fastenings fastening safety mechanism fastening safety mechanism sliding door fastening screw fastenings for garments fastening on fastening on bridges fastening on curtain rods fastening on curtain rodscurtain rails fastening on plates or sheets fastening on the shank of the key fastening on tie-plates fastening pad fastening pads fastening paper