It is also very important to speak with correct language and listen dedicatedly, and adopt fitting body language to communicate with children;
专注地倾听，正确运用语言艺术，采用多种适宜的身体语言动作与幼儿交流；
The molten observation hole needle (3) is arranged on the pipe fitting body so that a welding progress can be conveniently detected, and the welding quality can be controlled.
焊接熔观察孔针(3)设置在管件本体上，方便检测焊接进程，控制焊接质量。
The molten observation hole needle (3) is arranged on the pipe fitting body so that a welding progress can be conveniently detected, and the welding quality can be controlled.
焊接熔观察孔针(3)设置在管件本体上，方便检测焊接进程，控制焊接质量。
应用推荐