根

In practice, this is because just before the out of teeth, root is not fully formed, the pulp cavity and apical foramen are large, thin apical cementum caused.

实际上，这是因为之前出牙，根尚未完全形成，牙髓腔和根尖孔大，薄根尖牙骨质造成的。

As long as the root of the characteristic equation is within the unit circle of z-plane and the corresponding PID parameter is got, the closed loop control system is sure to be stable. Although the root of the characteristic equation can vary within the unit circle of z-plane,different value may affect the control property differently.

本文所采用的这种确定PID参数的方法，虽然可以使特征方程的根在z平面的单位圆内任意取值，但各种取值情况对变风量空调系统的控制品质的影响却不同，因此，要对各种特征方程的根的取值情况进行寻优，本文采用遗传算法对特征方程的根进行寻优，从而使控制器的参数得以优化。

Rock-Eval analysis and kerogen degradations show that most of the kerogens from the strata section are over mature. Only the kerogen acquired from Hongshuizhuang Formation can meet the chemolysis and thermolysis of kerogen.

Rock-Eval等数据以及初步的干酪根化学和热降解的研究表明剖面中大部分干酪根样品已对应成熟至油窗结束阶段，且只有来自剖面洪水庄组干酪根具有开展全面有机地球化学研究的价值。

The later chicory root harvested, the time of vernalization was shorter and the carbohydrate in it was higher.

菊苣根采收的越晚，需要春化的时间越短，菊苣根中碳水化合物的含量也越高，菊苣根采收以后短期时间内，还原糖的含量呈现急剧上升的趋势，非还原糖缓慢下降，并且采收的越晚，还原糖上升的幅度越小，非还原糖下降的幅度也越小。

The chicon quality after forcing was low and the yield, size, weight and density of chicon was small. In this paper, the changes of main chemical composition of chicory root during vernalization and storage at different temperature, the storage quality of chicory root at different temperature and the factors of affecting forcing were studied.

本试验以北京市农林科学院蔬菜研究中心提供的菊苣为试材，分别研究了菊苣根中主要化学成分在春化期间和不同贮藏温度下的变化情况，不同低温条件下菊苣根的贮藏品质以及影响菊苣软化的一些因素等进行了探讨，以期为今后菊苣根的贮藏和软化技术研究提供一些参考。

The results showed that Hyphae, conidiophore, conidium and chlamydospore of biocontrol strains ZK7 and IPC were found in the rhizoplane, Hyphae of ZK7 and IPC penetrated epidermal cells to deep cortical cells but not in phloem tissue and xylem vessels, biocontrol strains ZK7 and IPC also crossed and even grew within epidermal and conical cell walls without any visible alterations of the plant cell.

生防菌ZK7和IPC菌株能以菌丝方式稳定定殖于烟草根表的根冠区、伸长区、根毛区、成熟区等不同部位，而在根内的定殖仅局限于根表皮层较深的细胞组织，不能侵入烟草根部的韧皮部和木质部组织。

In the broad-leaved Korean pine climax forest, the fine root climax production of the community occurs in July and October, but the dominant arboreal species, understory arboreal species and fine roots of grass have a different production dynamics. It is important to sort the fine root species because accurate fine root production sources have a different fine root dynamics.

在原始阔叶红松林中，群落细根的生长高峰发生在7月和10月，但其中主要树种、其他木本和草本的细根有着不同的生长动态，所以在计算细根生产量时应该分类计算，才会得出较为准确的结果。

7Gm〓 in the 20 yr forest, 1139. 8gm〓 in the 80 yr forest and 912. 4 gm〓 in the climax forest, respectively. However, along with forest succession, the dominant tree species fine root annual production increases, whereas other arboreal and grass fine root annual production decreases.

白桦山杨幼林、白桦山杨成熟林与原始阔叶红松林中，细根年生长量分别为712.7gm〓、1139.8gm〓和912.4gm〓；但是，随着演替的进行，林地主要树种细根的年生产量会逐渐增加，其它木本和草本细根的年生产量则逐渐降低。

Clubroot A serious disease of the cabbage family caused by Plasmodiophora brassicae, in which the roots become swollen and misshapen, with characteristic gall-like swellings.

根肿病：由芸苔根肿菌 Plasmodiophora brassicae所引起的甘蓝类植物的一种疾病。植物患病后，根往往变得肿胀畸形。

In the mycorrhizal inoculation test, the total dry weight of inoculated coneflower was more than control. The concentration of cichoric acid in the leaves of inoculated coneflower, 472.520 μg/mL was significantly higher than uninoculated control 245.638 μg/mL.

在菌根菌接种实验中，接种菌根菌的紫锥菊总乾重比未接种菌根菌的紫锥菊高，实验中也发现VA组叶子cichoric acid浓度为472.520

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。