It is turned out by means of in-line manufacturing technologies to produce optical parts on one fiber, thus to form a circuit without weld joints.

Application of online technique in tracer test——A case in Qingmuguan subterranean river system,Chongqing,China;

The article introduces the optical charactor of the Bragg grating sensor, the manufacturing technology of the fiber grating, the principle of the fiber grating sensor, the modulate and demodulate technology of the wave length displacement sign and the analysis t.

CAI software is modern education indispensable important means, this text combine VFP6 design advantage to make in courseware, discuss CAI courseware manufacturing technology based on VFP6 emphatically, and provide realizing the course concretly of the technology.

Recent development of long-period fiber grating in fabrication technology;

Based on construction difficulties,some technologies of large-span H-shaped steel truss are introduced,including fabrication technology,pre-assembly and pre-arching principle as well as construction flow and welding quality management.

In construction of low press wet helix gas storage tank, making of helix rack possessed very important status, this article introduced making technology of helix rack without special equipment, and ensured stabilization of quality of making rack, efficiency.