卡尔曼
2.The new record-breaking tree was discovered in Dalarna in 2004 when Swedish researchers were carrying out a census of tree species in the region, Kullman said.
3.Researchers had discovered a spruce with genetic material dating back 9,550 years in the Fulu mountain in Dalarna, according to Leif Kullmann, a professor of Physical Geography at the university in northwestern Sweden.
4."It was a big surprise because we thought until (now) that this kind of spruce grew much later in those regions," he said.
5.Furthermore,according to basic logarithm formula of velocity distribution,unified formula of Karman constant κ for the flow with high and low concentration has been reasonably expressed by using relative viscosity index μ_r to be related to concentration and grain diameter distribution. Finally,by comparing and verifying for two kinds of velocity formulas,the unified laws of logarithm velocity distribution with both Karman-Prandtle velocity and Karman constant κ has been analyzed and verified by using measured velocity data in the coal powder tests.
