RC bridge pier with rectangle section
Spring with high stress
spring with rectangle’s section
a circular section with fixed diameter
a joint section with filling and cutting
Base section with round plate connection
channel section with outer edge
Cold-rolled forming section with thin wall
combination column with section steel and concrete
Cross section with arbitrary shape
nonstandard pressure vessels of rectangular cross section with round angles
restricted searching area with rectangle
Section with poor geological conditions
tunnel section with unfavorable geological condition
symmetrical rectangle section vessel
Spring Force of Constant Torque Spring and Wing-up Spring
dissolve with heat,flow with the same temperature,elute with warm water