Over 300 worked-out examples and more than 800 problems provide valuable learningaids.
超过300个算出的例子和超过800个问题提供学习帮助的贵重的物品。
2
The huge need of learningaids promoted the market prosper, China joined WTO to bring new opportunity and the challenge for Chinese publication industry.
教辅图书的巨大需求促进了市场的繁荣，入世给中国图书行业带来了新的机遇和挑战。
3
To assist the Technical Manager in the preparation of learningaids, evaluation methods, and service training seminars for distributor repair and warranty centers or customers.