A mutant plant Yuan 3 was screened in the Impatiens balsamin,a plants grown from the seeds treated by space flight, and the chromosome numbers and size of microspores in the descendant plants from SP_1 To SP_3 generation were tracked.
凤仙花种子经神舟4号飞船搭载后发现的院3突变株,从SP1代到SP3代小孢子的染色体数目和小孢子的大小进行了追踪研究,发现该突变株SP1代小孢子中的染色体数目变化大,从仅含1条染色体,到最多含28条染色体,小孢子之间的大小差异也大;SP2代小孢子中的染色体数目变化范围缩小,仅在4-9条之间;小孢子大小之间的差距也变小。
Controllable synthesis of the silica-supported rhodium catalyst with uniform particle size has been achieved through microemulsion technique by manipulating the W_0 value (molar ratio of water to surfactant in the precursor).
利用微乳法,通过调节W0值(水与表面活性剂的摩尔比),实现了负载型Rh/Si O2催化剂中金属铑粒子大小的可控合成。
The particle size, morphology, distribution of carboxylic group and alkalic thickening nature were investigated.
对复合胶乳的粒子大小及形态结构、羧基分布和碱增稠性能等进行测试 ;考察了复合乳化剂浓度和聚合方式对复合胶乳性能的影响。
on the latex particle size.
讨论了引发速率和乳化剂浓度以及不同聚合方法和各种条件对乳胶粒子大小的影响。
Insect seed predation and its relationships with seed crop and seed size of Quercus mongolica;
昆虫种子捕食与蒙古栎种子产量和种子大小的关系
Relationships between seed size and seedling growth strategy of herbaceous plant:A review;
植物种子大小与幼苗生长策略研究进展
Effect of variety, seed size and fertilizer on biological characteristics of winter wheat;
品种、种子大小和施肥对冬小麦生物学特性的影响
An atomic-scale net will make your technology disappear.
原子大小的因特网将使现有的各种技术产品销声匿迹。
are creating prototype computer circuits on atomic or Molecular levels
正在研制原子或分子大小的计算机电路
Molecules all vary in size, depending upon the numBer and size of the atoms which compose them.
分子大小各异，它取决于组成这些分子的原子的数目和大
The stability of HF results in an ozone-depleting potential of the fluorine radical that is approximately three orders of magnitude less than that of the chlorine radical.
HF的稳定性导致了氟原子团的臭氧损耗的可能。氟原子团大约比氯原子团小三个数量级。
Nuclear size effects are intertwined with nuclear force effects.
原子核大小的影响与核力的影响纠缠在一起。
Changes of nuclear mass and nuclear size cause isotope shifts.
原子核质量和大小的不同引起同位素移动。
Molecules, atoms and electrons are too small to Be seen By the most powerful microscope in the world.
分子、原子和电子都小得连世界上最大的显微镜也无法观察到。
Small as atom is, electron is still smaller.
原子虽小,但电子更
The particles in an atom are infinitely small.
原子里的粒子极小.
Presumably both the very small size and activating influence of fluorine atoms contribute to this exception.
这大概是由于氟原子半径小和活性高这两个原因的影响，氟原子对这种例外做出了贡献。
Atoms are extremely small ; it is impossible to convey an idea of their size in any ordinary simple terms .
原子是极微小的，用普通的简单词语表示其大小是不可能的。
The other is nanotechnology, which promises to reduce the size of electronic components to one- millionth of a meter, or roughly 10 times the size of an atom.
后者可使电子元件的尺寸缩小到百万分之一米，大约只有一个原子的10倍大小。
They had to lower their sights and buy a smaller house than they would have liked.
他们原来想买一所大房子, 后来不得不降低要求买一所较小的.
They have to lower their sights and buy a smaller house than they will have like
他们原来想买一所大房子, 後来不得不降低要求买一所较小的
They have to lower their sights and buy a smaller house than they will have liked
他们原来想买一所大房子,後来不得不降低要求买一所较小的
The magnitude of magnetic field in the z direction is the main reason for the fluctuating of the dust density distribution.
磁场大小是导致尘埃粒子密度分布波动的主要原因。
the explosion of the firecrackers awoke the children; the burst of an atom bomb creates enormous radiation aloft.
鞭炮的爆炸吵醒小孩；原子弹的爆炸产生大量的放射线。
a tabular arrangement of the chemical elements according to atomic number as based on the periodic law.
以周期律为基础按原子量大小顺序排列的化学元素表。