混合器要配备一部28英寸的真空器，以便除去浆液中截留的空气。
A vacuum of about 28 "hg was applied to the mixer to remove entrapped air from the slurry."
按此方法设计的稳定真空度混合器，能够根据发动机负荷的变化而控制空燃比，且工作安全可靠。
The stable-vacuum mixer designed by this way is able to control air fuel ratio in confromity with the variations of engine load and ensures to operate safely and reliably.
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