日本色www_成人无码www免费视频嘿嘿软件_欧美四级在线观看_精品三级在线观看_成人国产精品入口免费视频_国产精品pans私拍

產品描述：土壤水分傳感器基于頻率反射 FDR 原理，通過 100MHz 頻率下測量傳感器上電容的變化，從而測量插入介質的介電常數。

產品英文描述：The soil moisture sensor is based on the principle of frequency reflection FDR .The dielectric constant of the inserted medium is measured by measuring the capacitance change on the sensor at a frequency of 100MHz.

產品參數：