查询词典 root tip

It includes three-stories of initials in the protomeristem of the root tip.

实验观察表明，甜菜根尖的原分生组织有三层原始细胞。

The aim was to understand the mitotic chromosome aberrations in root tip cell of industrial polluted Stellaria media and micronucleus.

［目的］了解工业污染区繁缕根尖细胞有丝分裂期染色体的畸变和微核。

By using random amplified polymorphic DNA technique, this paper studied the effects of Cd stress on DNA polymorphism in root tip of Vicia faba seedling s.

采用随机扩增多态性DNA技术检测镉胁迫对蚕豆幼苗根尖DNA多态性的影响。

The seeds of Adzuki bean were irradiated by 60 Co γ ray of 0～700Gy.The results showed that:(1)The sub\|lethal dose(LD 50 )was 389Gy and the early seedling leaf at M\-1 showed incised,chlorotic,yellow,mosaicand curly edge.The absorbed dose was related with the rate of misshaped leaf.Chromosomal aberration, chromosome bridge and fragment of M\-1 in the tip were observed.If the seed was irradiated with 400Gy,the rate of abnormal cell at the root was more than 10%.The relationship between pollen fertility and irradiation dose was negative correlated.

本试验研究结果表明：60 Coγ射线辐照小豆种子的半致死剂量平均为 3 89Gy ，且M1生长初期叶片性状有明显的叶面缺刻、叶色缺绿、叶形不对称、叶缘卷曲、花叶、黄叶等致变现象，各种畸型叶出现频率与辐照剂量大小有关；M1根尖细胞中有多种染色体畸变类型，以染色体桥和断片频率较高，辐照剂量在 40 0Gy以上时根尖细胞异常率达 1 0 %以上；植株花粉育性与辐照剂量呈极显著负相关，京农 2号植株花粉育性达 5 0 %时的辐照剂量为 3 78Gy。

F2 of nasalized vowels at tongue root in GZPTH enjoy higher frequencies while those of tongue-tip vowels give lower frequencies due to blurring pronunciation.

相比而言，广州普通话舌根舌尖发音最为含糊，在共振峰频率上表现为舌根鼻音的F2偏高而舌尖鼻音的F2偏低。

Mycelium overgrew root tip.

其中，以Lb5328N和SP 504的感染率最高，达到75%以上。

It is found the strength of vortexes is increasing gradually from the root to the tip.

这说明分离漩涡沿叶高方向是产生、加强和发展的过程。

The effects of copper sulphate, lead acetate, zinc sulphate, cadmium chloride and neckel chloride on growth and root tip cell divition of Cucumis sativus seedlings were studied respectively.

选用黄瓜籽苗为材料，硫酸铜，醋酸铅、硫酸锌、氯化镉和氯化镍为化学处理试剂，研究它们对黄瓜籽苗的生长及其根尖细胞有丝分裂的影响。

Feeding JA or ABA after root tip cutting showed similar effects with endogenous JA or ABA.

根尖切除后单独或共同饲喂JA或ABA，能表现出与内源JA、ABA具有的调控地上部叶片生理反应的相同功能。

This method changes the interference analysis between gear shaper root circle and non-circular gear tip curve in manufacturing non-circular gear which is similar to that of a cylindric...

提出通过改变插齿刀的基本参数来避免干涉的方法，这种方法既可以避免刀具的齿根与非圆齿轮的齿顶的干涉，又不会引起其它的干涉现象产生，是解决非圆齿轮加工中产生干涉问题的有效方法。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。