Definition of petcock in English:

petcock

noun ˈpɛtkɒkˈpetkäk

A small valve positioned in the pipe of a steam boiler or cylinder of a steam engine for drainage or testing.
（蒸汽锅炉管子上的）小龙头，小旋阀；（蒸汽机气缸中的）泄气阀
Example sentencesExamples
- This time I put a piece of tape over the petcock opening instead of using the screw on block off plate I had made to use on the first steps.
- They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse.
- Steam for ten minutes, then shut off the steam by either closing the petcock or dropping the weight gauge into place.

Definition of petcock in US English:

petcock

nounˈpetkäk

A small valve, especially in the pipe of a steam boiler or cylinder of a steam engine for drainage or testing.
（蒸汽锅炉管子上的）小龙头，小旋阀；（蒸汽机气缸中的）泄气阀
Example sentencesExamples
- Steam for ten minutes, then shut off the steam by either closing the petcock or dropping the weight gauge into place.
- They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse.
- This time I put a piece of tape over the petcock opening instead of using the screw on block off plate I had made to use on the first steps.

词汇	petcock
释义	Definition of petcock in English: petcock noun ˈpɛtkɒkˈpetkäk A small valve positioned in the pipe of a steam boiler or cylinder of a steam engine for drainage or testing. （蒸汽锅炉管子上的）小龙头，小旋阀；（蒸汽机气缸中的）泄气阀 Example sentencesExamples This time I put a piece of tape over the petcock opening instead of using the screw on block off plate I had made to use on the first steps. They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse. Steam for ten minutes, then shut off the steam by either closing the petcock or dropping the weight gauge into place. Definition of petcock in US English: petcock nounˈpetkäk A small valve, especially in the pipe of a steam boiler or cylinder of a steam engine for drainage or testing. （蒸汽锅炉管子上的）小龙头，小旋阀；（蒸汽机气缸中的）泄气阀 Example sentencesExamples Steam for ten minutes, then shut off the steam by either closing the petcock or dropping the weight gauge into place. They were fitted with a dial gauge, a vent port in the form of a petcock or counterweight, and a safety fuse. This time I put a piece of tape over the petcock opening instead of using the screw on block off plate I had made to use on the first steps.
随便看	dial plate dials dial something down dial something down dial something in dial something in (or into) dial something in (or into) dial something into dial something up dial something up dial something up dial sth down dial sth in dial sth into dial sth up dial sth up dial telegraph dial telephone dial tone dial tones dial-up dial up dial up dial up (or dial something up) dial up (or dial something up)