... marking hammer 印记锤 marking signal 标记信号,标志信号... marking impulse 标记脉冲 ...
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Within a decade, people began actually marking OK on documents and using OK on the telegraph to signal that all was well.
在10年内，人们开始真正把OK写入文件，并且在电报用OK表示一切平安。
Insect host marking pheromones are chemical compounds produced by females and deposited on or into hosts to signal the presence of conspecific brood.
昆虫寄主标记信息素是指由昆虫产生的用来标记寄主上有同种个体存在的化学物质。
Marking tape can be used as a warning signal on the groud or pillar etc.
斜纹印刷胶带可用地面、立柱等警示标志。
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