Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Compressor valves can become distorted and fractured if liquid refrigerant
is allowed to enter the cylinder; this is known as liquid slugging. For this
reason service cylinders should never be inverted during the low side charging
of a system.
Valve seats and reeds can become pitted if metal filings or small particles
of grit are allowed to enter pipework during installation or repairs. They may
circulate with the refrigerant and become trapped between the reeds and valve
seats when compression takes place.
Excessive wear on pistons and cylinder walls will also contribute to a loss of
compression. This is most likely to be experienced on a plant which has...
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PRACTICAL RADIATION TECHNICAL MANUAL PERSONAL PROTECTIVE EQUIPMENT
