Compared with the conventional presplitting methods, the shaped charge is obviously more effective in presplitting blasting and especially useful in controlling the presplitting slots.
Series 909 Reduced Pressure Zone Assemblies are designed to provide crossconnection control protection of the potable water supply in accordance with national plumbing codes.
This paper discusses basic concept and sort of filoplume, analyses the cause that infecting filoplume of cashmere yarn, and puts forward control measure in working procedure.
He saw people as puppets, controlled by some pitiless force much as he, in boyhood, had controlled his own marionettes in his toy theatre, making Mr Punch jibber and squawk in nonsense-language.