PETROLEUM INDUSTRY. EQUIPMENT FOR THE DISTRIBUTION OF LIQUEFIED HYDROCARBONS. COMMERCIAL BUTANE AND PROPANE CYLINDERS. DIMENSIONS.
石油工业。液态烃分配装置。商用丙烷和丁烷钢瓶。尺寸。
Taking propane and butane storage for example, it states that the pressure of underground water must be higher than that of the product stored.
以储丙烷, 丁烷为例, 说明地下水压力必须大于储品压力。
HOUSEHOLD ECONOMY. CORRUGATED METALLIC FLEXIBLE PIPING FOR THE EXTERNAL CONNECTION OF DOMESTIC APPLIANCES USING BUTANE AND PROPANE FROM CYLINDERS.
家政学。家用煤气设备外部连接用波纹状的挠性金属软管。
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