Finally, instead of sending a paper representation of payment such as a check, e-commerce allows one to send payment information electronically.
最后，电子商务中，人们可通过电子方式而非支票等纸质支付形式来发送支付信息。
2
The third form is sign representation, i. e. the various languages of human.
第三重形式是符号表达形式，其表现是人类的各种语言。
3
The E, B representation of constitutive relations are given, the wave equation in moving medium and the equations which the longitudinal components of field quantities E, H satisfied are derived.