The test results show that,without obvious increase of volumetric efficiency,this system is able to make obvious change to the exhaust gas emission of diesel engine.

Volumetric efficiency is an important factor affecting the engine performances.

Volumetric efficiency is a very important parameter to test whether the engine has a good process of air exchange,it s also an important guide line to scale the engine performance.

Researches on filling coefficients for stability of soil stratum permeability;

Based on the comparison between theoretical calculation and test results,this paper suggests that the filling coefficient of c.

Confirmation of new photodetector and its fill factor;

The integration technique is applied to 256×256 PtSi CCD, and has made its fill factor increased by 2.

The results show that the performances of graded gravel mixture are improved significantly after being treated with cement and lime,especially when fill factor is 0.

In the evaluation of gravel filling sand prevention, the filling coefficient is one of important parameters to evaluate gravel filling whether good or not.

Based on the bulk model of rock resistivity, the experimental formula of porosity was developed, the “filling coefficient”expression was also derived from the consistence of the filling coefficient and porosity.