So the machine has many controlling assemblies such as needle selecting, triangle changing, density adjusting, needle bed moving, thread-carrier changing etc.
因而机器有多类控制装置，如选针、三角变换、密度调节、针床横移、导纱器变换装置等。
2
The upper end of the adjusting screw (7) is provided with a frustum-shaped valve needle (6).