乘法

The teacher hammered away at the multiplication tables.

师一再朗读乘法。

The teacher hammers away at the multiplication tables.

师反复地念诵乘法。

The teacher quizzed the pupils on the multiplication tables.

师测试了学生们对乘法掌握。

We had multiplication tables drilled into us at school.

以前我们上学得反复背诵乘法。

Multiplication and addition are associative operations.

乘法和加法是结合性运算。

A decade or so ago, I designed a simple circuit that included a quad optoisolator arranged in a full-wave analog-multiplier bridge (Figure 1).

约十年前，我设计了一个简单电路，包括按全波模拟乘法器电桥排列四个光耦（图1）。

This paper discusses the structure, calculation of multiplication and power, eigenvalue and eigenvector, and diagonalizable problems of matrix of rank equal to 1.

摘要对秩等1阵结构、乘法与乘幂运算、特征值与特征向量和对角化问题进行了讨论。