As opposed to gas-liquid systems, there is an interchange of gas between bubble and continuous phase in fluidized beds.

与气-液系统不同的是，在流化床中气泡和连续相之间有气体交换。

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This factor accounts for the gas adsorbed on the solids, its interchange between the wake and the emulsion, and its holdback in the system.

这个系数考虑到了在固体颗粒上吸附的气体，尾涡和乳化相之间的交换以及在这个体系中的滞留量。

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All the main piece such as standard knot, tie, up and down turntable adopt CO2 gas coverage weld whose depth is big and the deformation is small. The assembling of standard knot can interchange.

标准节、拉杆、上下转台等主要部件(位)全部采用CO2气体保护焊，熔深大，变形小标准节可互换组合。

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Retailers, restaurateurs and gas-station owners have long complained about the so-called interchange fees charged by banks for Visa Inc. and MasterCard Inc. debit cards, which average roughly 1% to 2% of the total transaction amount far more than similar fees to process paper checks.

WSJ: Merchants Win Debit-Card Fee Battle