1) natural trunk
自然接干
1.
By respectively real surveying on 150 Paulownia elongata along sample trees of natural trunk extension by adventitious in stand, along roadside and single tree with the same site type, the quantitative model between form quotient of natural trunk extension of \%Paulownia elongata\% and main tree growth factors is established.
在相同立地条件下，分别对兰考泡桐林分、四旁树和孤立木样木（包括依靠不定芽自然接干的１５０株和人工接干的３０株）与接干有关的生长因子进行实测，并建立兰考泡桐接干形率与主要生长因子的数学模型；不同栽植方式对接干形率、第一接干高均有显著影响；第一接干高与苗高呈负相关，但相关性不显著；第一接干发生时的树龄以３～４ａ对接干形率的影响最佳，５ａ以后接干效果较差。
2) natural stem-join character
自然接干性状
1.
The genetic variation of natural stem-join characters of Paulownia fortunei(Seem.
运用田间试验和统计分析的方法研究了白花泡桐天然杂种无性系自然接干性状的遗传变异。
2.
The genetic variation of paulownia s natural stem-join characters was studied by means of field observation, field test and statistical analysis.
运用野外观察、田间试验和统计分析的方法研究泡桐自然接干性状的遗传变异规律。
3.
The genetic variation of natural stem-join characters of Paulownia fortunei clones was studied by means of field test and statistical analysis.
利用田间试验和统计分析的方法,研究了白花泡桐无性系自然接干性状的遗传变异规律。
3) natural disturbance
自然干扰
1.
Gap dynamic and their natural disturbance characteristics in mid-Fujian montane natural forest;
闽中山地天然林林隙动态及自然干扰特征
2.
Under natural disturbance conditions, the waterlogging bottomland presents regular change, however, the degree of immoderate human-caused di.
自然干扰因子包括地质构造运动、气候及水文改变等,人为干扰因子主要是指农业政策、人口压力、水利工程及环境污染等。
3.
The effects of natural disturbance such as sea level rise, typhoon and storm tide, and human_caused disturbance such as reclamation, coastal engineering, environmental pollution and natural conservation area construction, on the structure and function of estuary wetland ecosystem were analyzed.
对河口湿地生态系统所受到的自然干扰和人为干扰进行了系统辨识。
4) natural drying
自然干燥
1.
The shrinkage of the specimens in airtight curing condition and natural drying condition were measured continuously.
当养护环境由密闭养护变为自然干燥养护时,收缩速率会突然增大,成为产生干缩裂缝的危险期。
2.
The comparative drying tests were carried out on natural drying condition,using the submerged vegetation(Potamogeton pectinatics in Wuliangsuhai Lake) processed by different means as the test materials,obtaining the relationship among t.
本研究以乌梁素海生长的沉水植物(龙须眼子菜)为试验材料,在自然干燥情况下,采用不同处理方式进行干燥对比试验,获得了挤水、喷洒碳酸钾、切段等处理方法对水草干燥速度的影响关系。
6) natural drying
自然干化
1.
Study on the integration of vertical enhanced filtration and concentration and natural drying and digestion on sewage sludge;
污水厂污泥一体化竖式强化渗滤浓缩自然干化与消化研究
补充资料：星接阻抗和三角接阻抗的变换
星接阻抗和三角接阻抗的变换
transformation between starc-onnected and delta-connected impedances
x ing]一e乙日kongl介e sonJ一00}Iez日伙ongde匕一。一〕huon星接阻抗和三角接阻抗的变换(t ransfor-mation betweenstar一eonneeted and delta-eonneeted imPedanees)接成星形的三个阻抗和接成三角形的三个阻抗互相替代的等效变换。它们之间的关系可用一组变换公式表示。按这组公式，用星接阻抗替换三角接阻抗或者反过来，不会影响稳态下电路其他部分的正弦电压和电流，常用于对称三相电路的分析和计算。 图1为三个阻抗21、Z:、23接成星形(又称丫形)。图2为三个阻抗Z小22。、Zal接成三角形(又称△形)。它们之间的变换公式如下:人23土图1星接阻抗图2三角接阻抗(1)将星形连接变换成三角形连接212一Z:+22+2 122及3一22+za十警(1)、|冬|矛231一23+21+2321(2)将三角形连接变换成星形连接z、-二一典乒兴-) 艺‘2士乙“3十乙31…_2 oqZI，}Z。一下万~一二-二二-汁 乙‘2士乙23十乙3‘1_Z。IZoq}艺q一二二一~二，二二--，-二二-~J 乙12十乙23十艺32夕(2) 当三个星接阻抗相等，即21一Z:一23一z丫、三个三角接阻抗相等即212一223一231一Z△时，变换公式是 Z二一32丫，Z丫一Z△/3
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条