further standard function

new rural housing standard block

non-standard block

Probability distribution of water quality function standard

rural housing standard block

standard block

standard block ga(u)ge

standard function

standard standard of vo|

control function block

delta function (=δ-function)

FBD Function Block Diagram

Flexible function block

free function block

Function Block

function block diagram

Function Block Number

function， function key

knowledge function block