法国航空公司现在正在迅速更换新型的测速仪。

Air France is now moving quickly to put in newer versions of the speed sensors.

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阀门阀瓣可以迅速更换。

Valve disc can be quickly replaced.

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旋开箱体不需拧松外壳，只需最小空间。不需移去电气设备，此型号装置能迅速更换控制装置。

Minimum space required for removing the enclosure without unscrewing the sheath. This execution allows rapid replacement of the control apparatus without emptying tanks equipment.

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