1. The strain vector is a scalar quantity.

2. Power is a scalar quantity and has a instantaneous characteristic.

3. And physical quantities are divided into the scalar quantity, the vector and the tensor.

4. The true thickness of strata is conventionally calculated by using the scalar quantity in field survey.

5. The iconicity of politeness in the mental representation is discussed, which can be examined from cognitive context iconicity, pragmatic distance iconicity and scalar quantity iconicity.

6. The true thickness of strata is conventionally calculated by using the scalar quantity in the survey.

7. It is well known that sound wave has both scalar quantity field and vector quantity field.