The processing of silica sand including transferring, screening and dewatering, eliminating bridge-formation in the silo, weighing in precision, dust-prevention device etc. has been recommended.
本文着重介绍了石英砂原料的输送、筛洗与脱水、料仓破拱、精确称量、除尘与密封等问题。
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We stopped at London Bridge, a double-arched formation whose outer span collapsed in 1990, stranding a couple on the other side so that they had to be rescued by helicopter.
Non cartilaginous tissue and material could only prevent formation of bony bridge in small defect of growth plate and lacked ability of regenerative repair.