vertical grain的意思|示意

Aiming at the problems exiting in grain classification at present, a vertical multistage waterpower device was developed to realize abrasive narrow-grade-classification.

本文主要针对目前磨料微粉分级存在的困难，自行研制了垂直式多级水力分级装置来实现磨料微粉的窄粒级分级。

Nanjing sand is anisotropic because of the schistous grain. Its horizontal strength is greater than that in vertical.

片状颗粒成分使得南京砂具有各向异性的性质，其水平向强度小于垂直向强度。

In the vertical heterogeneous reservoir, the alcohol-induced salt grain could elevate the fluid flow resistance, increase the injection pressure and change the flow direction.

对于纵向非均质油藏，醇诱导后的盐结晶颗粒能使油流动阻力增大，压力上升，流动转向。