under the same site category and intensity conditions, the seiic damage of steel structure building is greater than that of reinforced concrete structure building.
the confined boundary elements of shear wall include hidden column, end column, and concealed beam.
在有利发病的条件下，植物侵染害都可以产生病征；如细菌的菌脓，菌物的霉层。
analyze the following circuit, find the transfer function:
the n-channel enhancement-type mosfet is fabriacted on -type substrate.
the goal of checking calculation of strength under frequent earthquakes is to prevent structural collapse.
叶部病害的防治原则是一般不防治。
in the circuit below, let have a peak value of 10 v and r = 1 kω. the dc component of is v
generally, ductility coefficient of a structure is defined as the ratio of maximum allowable deformation and yield deformation of a member or structure when the bearing capacity of the structure is not less than ( ) of its ultimate bearing capacity.
the seiic fortification classification of buildings categorizes buildings into four groups according to their importance and function of these buildings in earthquake events, among which, the elementary school buildings belong to ( ) class .
the seiic impact coefficient is defined as the ratio between the maximum horizontal seiic action on the elastic system of a single matter point and the gravity of the particle. α =f/g