| 摘要 |
The present invention comprises an embodiment which includes at least one transmitter-receiver set (1,2) including a transmitter (1) and a receiver (2) opposed with an object to be measured therebetween; and a transmission device (4) that estimates the amount of the object based on the attenuation of electromagnetic waves that are transferred between the transmitter (1) and the receiver (2) of the transmitter-receiver set (1,2), and transmits information on the estimated amount of the object to be measured. |
