英语词汇“surface blow”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

surface blow n. (a) Engineering a device by which the surface water and scum in a steam boiler may be blown off; (b) a blow (blow n.² 1b) occurring when a whale is at the surface; (c) Metallurgy a defect in metal in the form of a small cavity on the surface of a casting.

ΘΚΠ

society > occupation and work > equipment > machine > machines which impart power > boiler > [noun] > parts of > device for blowing off steam

surface blow1857

blow-cock1885

1857 U.S. Naut. Mag. & Naval Jrnl. Aug. 356 Boiler Appendages..3 check valves, 4 inches diameter. 3 surface blows, two of 2 inches, and one of 1¼ inches diameter. 3 bottom blows [etc.].

1946 N. E. Woldman in Magnesium (Amer. Soc. for Metals) 93 Due to the low specific gravity of magnesium alloys, castings of these alloys are susceptible to the formation of surface blows.

1981 E. Hoyt Whale called Killer 51 I had brought the Nagra to record surface blows of the whales in case any should come close.

1998 H. Hofer & M. L. East in A. P. Møller et al. Stress & Behavior 459 Fin whales shortened dives and reduced the number of surface blows in the presence of boats.

2000 J. Russell Steam & Diesel Power Plant Operators Exam. (ed. 4) xi. 46/2 A boiler with a surface blow operating continuously will not have to be blown down.

2001 P. Beeley Foundry Technol. (ed. 2) v. 255 Surface blows and pinholes can also result from pellets of unmilled clay.

单词	surface blow
释义	> as lemmas surface blow surface blow n. (a) Engineering a device by which the surface water and scum in a steam boiler may be blown off; (b) a blow (blow n.² 1b) occurring when a whale is at the surface; (c) Metallurgy a defect in metal in the form of a small cavity on the surface of a casting. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > boiler > [noun] > parts of > device for blowing off steam surface blow1857 blow-cock1885 1857 U.S. Naut. Mag. & Naval Jrnl. Aug. 356 Boiler Appendages..3 check valves, 4 inches diameter. 3 surface blows, two of 2 inches, and one of 1¼ inches diameter. 3 bottom blows [etc.]. 1946 N. E. Woldman in Magnesium (Amer. Soc. for Metals) 93 Due to the low specific gravity of magnesium alloys, castings of these alloys are susceptible to the formation of surface blows. 1981 E. Hoyt Whale called Killer 51 I had brought the Nagra to record surface blows of the whales in case any should come close. 1998 H. Hofer & M. L. East in A. P. Møller et al. Stress & Behavior 459 Fin whales shortened dives and reduced the number of surface blows in the presence of boats. 2000 J. Russell Steam & Diesel Power Plant Operators Exam. (ed. 4) xi. 46/2 A boiler with a surface blow operating continuously will not have to be blown down. 2001 P. Beeley Foundry Technol. (ed. 2) v. 255 Surface blows and pinholes can also result from pellets of unmilled clay. extracted from surfacen. < as lemmas
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> as lemmas