On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as（）
A
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举一反三
- （） of the A-frames there is a strong cast iron frame called the scavenging air box.
- At the top of the A-frames there is a strong cast iron frame called （）.
- On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.
- Each set is to be put in a cardboard box, strengthened with iron straps, and then put in a wooden case. It must be strong enough to ______ the roughest handling.
- The cast iron guide-ways for （） are attached to the top section and seal off the crankcase.
内容
- 0
It is very necessary that each cylinder （） before the charged air is compressed.
- 1
Each cylinder is closed at the top by a （）， made of a special heat-resistant steel.
- 2
The cylinder block is a complicated casting made of gray iron(cast iron) or aluminum. 这句话的意思是机体是复杂的灰铸铁或铸镁件。
- 3
It is very important that each cylinder should be （） scavenged before the charged air is compressed.
- 4
Each cylinder has one starting valve which is usually opened by air pressure and closed by （）