then, according to the length of log, calculate the log volume by formulas, also, design the system.
之后根据原木的检尺长，运用材积计算公式得到了原木的材积，并设计了软件系统。Through the information identify and handling of image, gained the approximation of timer volume with poor condition and circumstances.
通过对图像信息的识别和处理，在检测条件和环境不理想的情况下得到木材材积近似值。Remarkable differences in diameter at breast height, tree height, stem volume and cellulose content were found between different families.
结果表明：不同家系在树高、胸径、材积和纤维素含量上均存在显著差异。Can be produced to various shape for packaging. Reduce material area to decrease flow capital.
可制成各种形状包裹产品，减少材积降低流通成本。The displacement method, on the other hand, can be used to obtain accurately the cubic volume of any part of the tree .
另一方面，排水法可用来精确求得树木任一部分的立方材积。The differences in single tree timber volume enhance with the increase of stand ages, but the increasing percentage decrease.
两种源单株材积随林龄加大，差异增大，但增长百分比随之减少。Height growth at the age of 1 and 3 was relative or extreme significantly correlated with the volume growth at the age of 5.
3年生树高与材积的早期相关为较显著或极显著，故早期试验林可测定树高为主，以减少工作量；Mortality is the number or volume of trees periodically rendered unusable through natural causes.
枯损是一类由于自然原因而定期变得无用的林木株数或材积。This? paper systematlly dels with the applied theory and method of angle measuring in volume growing estimation in permanent pont sampling .
本文系统研究了水平角规在固定样点监测材积生长动态中的理论与方法；