The interchange of the optical fiber guide lightneedle and the needle core of a retainable needle are not needed when in use, and the blood efflux because of inexperienced operation can be avoided.
使用时无需进行光纤导光针与置留针针芯的互换，可避免因操作不熟练造成的血液外流。
2
Green pine, spit out the new as the same as the needle leaf, light green of light green.
翠绿的松树，吐出了新的像针一样的叶子，浅绿浅绿的。
3
The Angle of rotation, which provides a measure of the current flowing in the coil, is measured by the movement of the needle or by the deflection of a Beam of light reflected from the mirror.