1.
Improved Reachability Tree and Reachability Decision of Petri Nets;
Petri网的改良可达树及可达性判定
2.
A Method for Reachability Decision of Live Single Branch Petri-Nets and an Algorithm for Construction of Improved Coverability Tree;
活的单支Petri网的可达性判定方法及改进的可覆盖性树的构造算法
3.
A Fractal Approach to Crown Structure and Rooting Characteristics of Poplar and the Strategies of Poplar Breeding;
杨树冠型、根系的分形特征及杨树改良策略
4.
Research for improvement of chestnut has been discouraging and encouraging.
栗树改良的研究工作曾令人失望又曾使人鼓舞。
5.
Achievements on Species Improvement of Cathay Poplar Group and Breeding Base Construction
青杨派树种改良及综合繁育基地建设成果
6.
Improving Pulping Property by Downregulation of Lignin Biosynthesis in Poplar;
通过木质素调控改良杨树制浆性能的研究
7.
The appliance of developing epoxy colophony to the casting of the viscera of human body;
改良环氧树脂在人体脏器铸型中的应用
8.
The Study on Improving the Pulping Properties of Poplar by Molecular Breeding Technology
杨树制浆性能改良的分子育种技术研究
9.
Amelioration Effect of Tea Tree Leaves and Acacia Leaves on the Acidity of Tea Garden Soils
茶树叶和刺槐叶对茶园土壤酸度的改良效果
10.
Application of Super-Bond C&B in resin-bonded fixed partial denture
Super-Bond C&B在改良式树脂粘结桥中的应用体会
11.
Current application situation and improvement suggestions of Lansle Human Resource Management System
蓝树人力资源管理系统的应用状况及改良探讨
12.
Progress of Plant Genetic Engineering Technology in Mulberry Improving
植物基因工程在桑树品种改良中的应用进展
13.
The results were excellent in 26 cases, sood in 15 eases, fair in 6 cases and poor in 3 ease, and the total effective rate reached 83%.
结果优29例,良15例,尚可6例,差3例,优良率达83％。
14.
Fields are improved by lying fallow at times.
田地经过不时的休耕可得到改良。
15.
Lofty figs are tall evergreen trees, reaching35 metres in height.
高山榕树为高大常绿乔木，可高达35米。
16.
Symbolic Reachability Analysis of Petri Nets Using ZBDDs
Petri网的符号ZBDD可达树分析技术
17.
Heterologous Expression and Modification of Laccase from Panus Rudis;
革耳（Panus rudis）漆酶的异源表达和酶学性质改良
18.
Studies on Growth Regulation and Cold Resistance Improvement of White Clover on TEDA Green Belt;
泰达绿化带白三叶矮化及抗寒性改良的研究