Bell gages may be used to measure gage pressure or differential pressure.
浮钟式压力计可以用来测量计示压力或差压力。
Meanwhile, a sand discriminant criteria specific for area deep gas reservoir is established on the basis of sand index, the critical production bell Aaron and the critical pressure parameters.
同时，建立了工区深气层出砂指数、斯伦贝尔比和临界生产压差等参数的临界出砂判别标准。
PMI's are a great bell-weather for the overall health of the economy, so data in Europe does not look good and is unlikely to lift pressure on the euro right now.
采购经理人指数是经济整体健康程度的晴雨表，所以，欧洲各个数据不佳，且不大可能减轻欧元目前承受的向下压力。
By allowing the influence of ambient pressure to be transmitted to the nozzle wall, the aerospike yields a net thrust advantage over conventional bell-type nozzles.
允许的影响，环境压力，以传送给喷嘴墙，气动收益率，净推力的优势，与传统的罩式喷嘴。
By allowing the influence of ambient pressure to be transmitted to the nozzle wall, the aerospike yields a net thrust advantage over conventional bell-type nozzles.
允许的影响，环境压力，以传送给喷嘴墙，气动收益率，净推力的优势，与传统的罩式喷嘴。
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