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

head block

/ˈhɛd blɒk/

noun

1In a sawmill: a support which holds the log on the carriage while it is being sawn.

2 Carriage-building. A part of the frame, usually a block of wood, which connects the fifth wheel with the front of the carriage body. Also attributive in head block plate. Now chiefly historical.

3In the logging industry: a log placed under the front end of the skids in a skidway so as to raise them. Now rare.

Origin

Late 16th century (in an earlier sense). From head + block.

单词	head block
释义	head block /ˈhɛd blɒk/ noun 1In a sawmill: a support which holds the log on the carriage while it is being sawn. 2 Carriage-building. A part of the frame, usually a block of wood, which connects the fifth wheel with the front of the carriage body. Also attributive in head block plate. Now chiefly historical. 3In the logging industry: a log placed under the front end of the skids in a skidway so as to raise them. Now rare. Origin Late 16th century (in an earlier sense). From head + block.
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