Abstract:In this paper, the definition and origins of structure function for characterizing fractal surfaces and its relationship with other statistic parameters are introduced. ln addition, experiments and its result analysis are given.

Abstract:IR detector parameter (Blackbody response sensitivily, Noise, Blackbody detectivity)measurement system and key techniques of parameter measurement are introduced and uncertainty of measured parameters is analyzed in this paper.

Abstract:This paper produces the method prequently used for acquiring alternating signal, and points out the limitation of acquiring fast changing weak alternating signal. On the base of them, a new synchronous sample method for acquiring signal is presented. With the new method, the high rate and accuracy can be reached.

Abstract:The load and coaxality of the high temperature creep and lasting intension testing machine can be calibrated with the stress and strain transducers and by the different methods for making up bridge, and its calibrating efficiency is increased.

Abstract:The design program of pressing on and off-line corrected jig is proposed, which does not require detaching any parts of corrected micrometer. The correction of the micrometer pressing on and off-line is solved by transferring the angle displacement into the line displacement of screw contact.

Abstract:This paper introduces the method for the synthetic of measuring quiescing goniometry with two autocollimators and precise angle dividing table.

Abstract:This paper compares the feasibility of two measuring methods which are used to detecting pressure container. It also describes the details of application of LDMS system on welding orientation and machining orientation of the container.

Abstract:This paper briefly describes the technical characteristics, measuring instrument,simulating technique and its developing trends

Abstract:The principle and composition of an Instantaneous Floating Amplifier (IFA) are described in this paper. In the meantime, a 256 order IFA with new pattern is giver, which can enhance effectively the dynamic range of data acquisition system.

Abstract:This paper describes the requirement of shown verification/calibration certificate,noticeable items and following principle when the technical department of the enterprises and institutions introduce the measurement apparatus for periodic verfication.