English writing always been a weak point in English teaching in college.

1、

The operator broke the glass free himself but wounded his hand trying to escape.

挖土机的操作人员打破了玻璃逃生时受伤,但他试图逃跑时.

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2、

Mechanical excavation is carried out by a variety of machines, including the shovel and drag-line excavator.

机械挖掘采用多种工具, 如铁铲和索铲挖土机.

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3、

Analysis of Paulownia Plants with Witches' Broom Tissue Culture Seedling Treated with Rifampicin Using SSR Technique

利福平处理患丛枝病泡桐组培苗的SSR分析

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4、

The height growing process of 1-year-old root cutting of Paulownia was simulated with Gompertz and Logistic equations.

以1年生泡桐埋根苗为对象，研究苗木年生长规律。采用Gompertz方程和Logistic方程模拟高生长进程，结果表明；

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5、

The changes of endogenous iaa, ctk and nucleic acids during adventitious root formation of Paulownia fortunei in vitro

白花泡桐离体培养生根IAA，CTK及核酸含量研究

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6、

Cultivate the mycelial growth of Pleurotus ostreatus and Auricularia polytricha, using the paulownia flower extract instead of potato of the PDA medium. The results showed: the mycelial growth of Pleurotus ostreatus is thinner;

用泡桐花浸液代替PDA培养基中的马铃薯，培养平菇和毛木耳菌丝体，结果表明：平菇菌丝体生长较弱；

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7、

The Distribution of Pau-Tong ( Paulownia) Tree in Hupei Province

泡桐属（Paulownia）在湖北省的分布

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8、

A study on VA Mycorrhizae formed on the tissue-cultured plantlets of Paulownia

泡桐组培苗VA菌根的研究

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9、

Study on the Relationship between the Content of Vitamin C and Resistance of Paulownia spp. to Witches ′ Broom

泡桐丛枝病的抗性与维生素C关系的研究

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10、

In this paper some internal and external factors affecting paulownia seedlingCO_2 exchange are studied.

研讨了影响泡桐苗木CO2交换的部分内外因素。

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11、

Establishment of Paulownia SSR reaction system

泡桐SSR分子标记反应体系的建立

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12、

Eradication of Paulownia Witches' Broom Agent ( MLO) from Infected Plantlet by Meristem Tip Culture

泡桐微茎尖培养脱除泡桐丛枝病原（MLO）的研究

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13、

Preservation and multiplication of Paulownia witches' broom pathogen MLOs by host plant tissue culture

泡桐丛枝病病原MLO在寄主离体培养组织中的保存与增殖

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14、

Construction of Paulownia genome library and subcloning of the special DNA fragment homologous to actin gene

泡桐基因文库的构建及actin基因同源顺序的亚克隆

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15、

Study on the fertilization and the development of fruit and seed of Paulownia

泡桐属（Paulownia）受精作用及子实发育的研究

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16、

RFLP analysis of Paulownia Plants

泡桐属植物种类的RFLP分析

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17、

Changes in Endogenous Phytohormone and RNA in Paulownia fortunei ( seem.) hemsl. during the development of adventitious root

白花泡桐不定根发生过程中内源激素和RNA的变化

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18、

Preliminary study on the pollen morphology of Paulownia

泡桐属（Paulownia）花粉形态学的初步研究

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19、

The effects of different photoperiods on in vitro plantlet regenerations from leaves of Paulownia tomentosa, P. fortunei and P.elongata on the optimal MS and 1/ 2 MS media for their in vitro organogenesis respectively were studied.

以毛泡桐、兰考泡桐和白花泡桐叶片为外植体，在其体外器官直接再生的最适MS和1/2MS培养基上，研究了不同光周期对泡桐叶片体外植株再生的影响。

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20、

Isolation and observation of chloroplast DNA from the Paulownia fortunei

泡桐叶绿体DNA的分离纯化与电镜观察

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