n.交叉相乘
Building on Students'Intuitive Strategies to Make Sense of Cross Multiplication. 培养学生运用直觉策略理解数学叉乘法的含义。
Factorization no universal way to junior high school mathematics textbooks are introduced using the formula, division of decomposition and cross multiplication. 因式分解没有普遍的方法 ，初中数学教材中主要介绍了提公因式法、运用公式法、分组分解法和十字相乘法。
Searches involving category information can be combined to cross multiple dimensions . 包括类别信息的搜索能够与类别的多维选择 一起使用。
Searches involving category information can be combined to cross multiple dimensions. 包括类别信息的搜索能够与类别的多维选择 一起使用。
Unlike business users, consumers don’t have concrete job descriptions, and their use of products may cross multiple contexts. Therefore, it often isn’t meaningful to use roles as an organizing principle for the persona hypothesis for a consumer product. 不像业务用户，消费者没有具体的职位描述，并且他们使用产品时通常跨越多个场景，因此将角色作为消费品人物角色假设的组织原则通常毫无意义。
