随着顶部压力的解除，火山激烈喷涌出大股的岩石、灰尘、气体和蒸气，降落下来后覆盖了数百平方英里范围内的森林。
Relieved of the overlying pressure, the volcano ejected a blast of rocks, ash, gas, and steam that blew down and buried several hundred square miles of forest.
为了把气体限制在一定的范围内，我们必须施加压力。
为了把气体限制在一定范围内，我们必须施加一个压力。
对于每一气体压力，有与最佳增益曲线对应的流速范围。
It shows that there is an optimum flow velocity corresponding to the best gain distribution for a given operating pressure.
为一时激增补偿与渠道，在入口压力与压力范围为1 ？二十六英寸厕所(0.25至6.5千帕)的模式限制口的气体压力。
Compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure channel on the models with pressure range of 1 to 26 in. wc (0.25 to 6.5 kPa).
用途：氩气流量计适用于氩气气体保护焊、农业植物培养、化工等行业。输入压力可变时，流量仍可在规定范围内保持其稳定的流量值。
USE: Argon gas flow meter are used to regulate the high pressure argon gas in cylinder for required working pressure, and ensure outlet pressure steady when input pressure and outlet flow change.
当罐内气体的压力在机械呼吸阀的控制压力范围之内时，呼吸阀不动作，保持油罐的密闭性；
When the pressure of the gas tank in the mechanical breathing valve control pressure within the breathing valve does not move, keep the tank airtight;
当罐内气体的压力在机械呼吸阀的控制压力范围之内时，呼吸阀不动作，保持油罐的密闭性；
When the pressure of the gas tank in the mechanical breathing valve control pressure within the breathing valve does not move, keep the tank airtight;
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