The invention discloses a synchronous digital hierarchy (SDH) circuit fault diagnosing method comprising the following steps of: obtaining original alarms of the equipment of all companies in a communication network; screening circuit fault characteristic alarms from the original alarms; obtaining c ...
[EN] The invention relates to lignin-bound biochar coated urea and a preparation method thereof and belongs to the technical field of utilization of agricultural biomass. A binder used in the lignin-bound biochar coated urea comprises acid-precipitated lignin, a pyroligneous liquid and water in diff ...
Click the thumbnails below to visualize the patent trend.
View Profile
