标号图

This paper discusses the gracefulness of disjoint union of paths such as,proving them graceful when.

文章讨论了形如P2m∪P2m+t的两条路不交并图的优美性，用构造性的方法给出了当t=-1，1，2时的优美标号，并证明它们是优美的。

The gracefulness of disjoint union of paths such as Pm∪P2m+t are discussed.

讨论了形如Pm∪P2m+t的两条路不交并图的优美性，用构造性的方法给出了当t=0，1，2时的优美标号，并证明它们是优美的。

Labeling is an important problem in Graph theory.

标号问题是图论中比较重要的研究内容之一。

4From a practical point of view, All kinds of sum graph ymbols can be used as acompressed representation of a graph, a data structure for representing the graph.

从实用的观点来看，各种和图标号均可用作图的压缩表示，即表示图的数据结构。

Firstly, system model depicted by TSIOA is transformed into an USTGSS (untimed stable label transition graph of symbolic state) which does not contain abstract time delay transitions. Then, the testing methods based on LTS are used to the generate transition sequences from USTGSS according to structural coverage criteria. Finally, a process of constructing and executing the test cases is given, in which object functions of time delay variables are imported, and time delay variables used in the transition sequences are solved dynamically by linear programming techniques.

该方法首先将时间安全输入/输出自动机描述的系统模型转换为不含抽象时间延迟迁移的稳定符号状态迁移图(untimed stable transition graph of symbolic state，简称USTGSS)；然后采用基于标号迁移系统(labeled transition system，简称LTS)的测试方法来静态生成满足各种结构覆盖标准的包含时间延迟变量迁移动作序列；最后，给出了一个根据迁移动作序列构造和执行测试用例的过程，该过程引入了时间延迟变量目标函数，并采用线性约束求解方法动态求解迁移动作序列中的时间延迟变量。

Parts No.. The implified diagram instruction for standard parts at the end of the book can help you find the exploded view of the needed

以帮助您确定所需标准件的标号、适用标准等，而&分解图号码说明&可以帮助您了解所需零部件所在的分解图。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。