In order to improve the bending rigidity of the beam, it can be realized by (). A: Choose high-quality materials B: Reasonably arrange the beam support to reduce the span length of the beam C: Reduce the load acting on the beam D: Choose a reasonable cross-sectional shape
In order to improve the bending rigidity of the beam, it can be realized by (). A: Choose high-quality materials B: Reasonably arrange the beam support to reduce the span length of the beam C: Reduce the load acting on the beam D: Choose a reasonable cross-sectional shape
light beam
light beam
What are beams in reinforced concrete building? A: simply supported-beam B: built-in beam C: edge beam
What are beams in reinforced concrete building? A: simply supported-beam B: built-in beam C: edge beam
The ___ is a load-carrying beam structure of the vehicle.
The ___ is a load-carrying beam structure of the vehicle.
声束轴线 beam axis
声束轴线 beam axis
A laser beam can be turned into a ____ weapon.
A laser beam can be turned into a ____ weapon.
On the cross-section that is exerted a concentrated couple m for the beam, .
On the cross-section that is exerted a concentrated couple m for the beam, .
声程beam path；path length
声程beam path；path length
A laser beam can be turned into a______ (dead) weapon.
A laser beam can be turned into a______ (dead) weapon.
声束有效截面 effective cross—section of beam
声束有效截面 effective cross—section of beam