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| 21. | "In Europe they are processed and sold as kippered herring; in eastern Canada and the northeastern U.S., most of the herring used are young fishes canned as sardines. Herring taken in the Pacific are used mainly to make fish oil and meal." |
| 在欧洲被加工并制成熏鱼来卖。在加拿大东部和美国东北部,供食用的鲱鱼大部分是幼鱼,制成沙丁鱼罐头。在太平洋捕到的鲱鱼主要用于制造鱼油和鱼粉 |
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| 22. | With the system we have designed and machined the broaching tool that has used to machine slippage gears in the gearbox of tractor. The result of the application shows that machined the parametric of gear accord with the demands. |
| 应用该系统设计制造了拖拉机变速箱滑移齿轮花键孔拉刀并进行了加工实践 ,使用结果表明 :被加工齿轮花键孔参数符合设计要求。 |
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