device for the protection of the belt conveyers
increase moisture in the soil for seeding
measuring device for the shape of pipe
PC comprehensive protection device for the CSR ser
protection device for the motor
spraying seed for the soil dressing
the device for drawing and installing pipes
telecommunications device for the deaf
the collection for AC signal
(1) for the need of public interest
1-order ordinary differential matrix equation for the state vector
a bull market for the US dollar
a dedicated transformer for the motor starting directly on line
a guide-dog for the blind
A Kind of New Excited Circuit for the Generators
a ladle for the whole process