Hence, this paper intends to make a philological study of some of Weihui dialects by referring to ancient literature.

It is believed traditionally that specified analysis methods should have a metrological traceability to primary method through reference materials.

The method of metrological traceability of values for catalytic concentration of enzymes is now widely recognized as the combination of reference materials, reference measurement procedures and network of reference laboratories.

The uncertainty for standard specimen and its advantage and disadvantage as compared with international standard reference materials were also given.

The suitable sample is the interlayer in mixed flux,using coke as a reference material,the test results are accurate and reliable.

The calibration curve related to abnormal discharge intensity and grain size of aluminium inclusion was fitted by means of low alloy steel reference materials with grain size distribution of aluminium inclusion.

The method can detect the warp by observing the distance between the two images reflected from the precision sheet glass and the standard plate for the same reference object.

Methods A reference object whose area is known to the wound is set and the digital image processing is utilized to measure the wound area.

The experience of making the medical material object examination bank;