punky wood,rotten wood,rotten timber

The change of the material was measured and analysed by using differential scanning calorimetry after decay.

研究了人工模拟菌类条件下塑木复合材重量的变化情况,采用差示扫描量热技术对腐朽后的塑木复合材进行了检测分析,并进行了扫描电镜的观察试验。

The decay in each wood component was observed and classified after having been measured by FAKOPP.

采用应力波测定仪对西藏古建筑上的腐朽与虫蛀木构件进行无损检测和目测腐朽观察,并将两种结果进行比较。

Wood species identification and study on variation of chemical components along decay and MOR of ancient wood structure in the Imperial Palace were conducted in this paper.

本研究以故宫武英殿的几种主要木构件为研究对象,在进行树种鉴定,划分腐朽等级并测定其抗弯强度的基础上,以不同抗弯强度的健康材和不同腐朽程度腐朽材为依据进行分类,分别对其化学成分的含量变化进行了测定并进行了木材结构的显微观察分析。

In a word,the corruption of the political power, the hopelesness of resurgence,the slackness of the army,the weakness of the national power,the sharpness of the social conflicts and the decentra.

南宋初期 ,政权腐朽 ,高宗无意中兴 ,军政涣散 ,力量薄弱 ,社会矛盾突出 ,统治力量分散 ,是高宗退避妥协政策的原

Fungi can cause dramatic decreases in strength properties during incipient decay in wood, because they can rapidly cause structural failure, even though the weight loss is minimal.

生物培养和显微镜观察被认为是目前唯一权威的用来检测和评估木材初期腐朽的方法,但这些方法很难对木材的初期腐朽进行快速、准确地评估。

Based on 15 years inventories on wood-decaying fungi in China,107 wood-decaying species were recorded on timber or wooden constructions in China,among them 24 species caused a brown rot,and they were most growth on coniferous wood,while 83 species caused a white rot,and they were commonly on both hardwood and softwood.

其中24种引起木材褐色腐朽,83种引起白色腐朽。

It forms black tumor on the trunks and results in white rot.

该病主要发生在海拔较高的成熟桦树上，主要特征是在树干上形成黑色肿瘤，造成心材白色腐朽；受害树极易风折，后期全株死亡。