n. 氢; 氢气
hydrogen的复数
hydrogen的复数
- A methane molecule is composed of one carbon atom attached to four hydrogens.
甲烷分子由1个碳原子与4个氢原子构成。 - The reported number of hydrogens, denoted by H1 and H2 for HOH, is low because detecting hydrogens requires a very high resolution that is not always achieved.
氢原子的报告数量（HOH中表示为H1和H2）比较低，因为检测氢需要非常高的分辨率，而且也不总是能够获得结果。 - Those that are aligned in the place are called equatorial hydrogens.
那些在平面上定向的氢叫做平伏氢。 - We've got an electron from each of the hydrogens.
然后我们从氢原子那得到了两个电子。 - All four of these hydrogens are electron-deficient in the same manner.
四个氢都是，以相同的方式缺电子。 - And so now I have hydrogens at the four corners of a tetrahedron.
放在碳正四面体，的四个角上。 - What is the energy change going from two atomic hydrogens to one H2?
什么是能量的改变，从两个原子氢到H2分子？ - As the starshine intensified, it eventually stripped electrons from the hydrogens, ionizing the atoms.
一旦星光增强，氢原子中的电子最后就会被打掉，形成离子。 - In there compounds, the cyclopentadiene ring has only four hydrogens.
在这些化合物里，环戊二烯环只有4个氢。 - I started with two electrons, one each from two atomic hydrogens.
完成了两个电子，它们分别来自于两个原子氢。 - And if we think about the six hydrogens, now each of those are going to bind by combining one of the carbon hybrid orbitals to a1 s orbital of hydrogen.
如果我们考虑有六个氢原子，每个都会合起来，碳杂化轨道成键，每个氢的1s轨道。 - Those that are aligned perpendicular to the plane are called axial hydrogens.
与平面垂直定向的氢叫做直立氢。 - Here are two hydrogens, and they both look the same.
把另一个放在这里，他们看起来是一样的。 - So we can have four total hydrogens bonding here,-and we can think about how to describe these carbon-carbon bonds.
我们这里一共有四个氢原子成键，我们可以考虑怎么来-，描述碳碳键。 - The [ M-68] fragment ion probably results from a rearrangement of three hydrogens.
7哌嗪8N喹诺酮酸具有[M-68]特征离子，可能是来自三氢重排的结果。 - The reaction rates decrease withincrease of the degree of chlorination, which implies that the substituted chlorine atoms hinder the neighboring hydrogens to be further replaced.
试验结果表明，氯代反应速度随产物氯化度提高而减慢，说明已取代的氯原子对邻近氢进一步被取代有阻碍作用； - H 1 and h 2 are the numbers of hydrogens which are connected with A or B;
h1，h2为与成键原子相连的氢原子个数； - Substituent group have little effect on hydrogens of A and C ring. The chemical shift of para-carbon increases as substituent group s 'supplying electron to benzene ( except for IE and 2E) increases.
与取代基相连碳的邻位、对位上的氢的化学位移随取代基的增大而增大（1E和2E除外），C环和A环上的氢受取代基的影响不明显； - The conjugated double bond in tung oil molecular with high activity can take place substitution reaction with one of ortho or para hydrogens of phenol.
桐油的共轭双键具有极强的反应活性，易与苯酚芳环上邻或对位的活性氢发生傅氏取代反应。 - Three Hydrogens Rearrangement of 7-Piperazine-8-N-Quinolone
7-哌嗪-8-N-喹诺酮酸的三氢重排 - The states of active hydrogens, the hindered rotation within molecules and the kinetic phenomena of tautomerism have also been discussed.
还对分子内的受阻旋转、活泼氢状态以及互变异构体的动力学现象作了讨论。 - The other two activated hydrogens still can take place mannich reaction with amine and formaldehyde.
余下的两个活性氢位置仍然能与胺类、醛类发生曼尼期碱的缩合反应。 - The emphasis is put on the discussion of bondings of boranes on the basis of interactions between borane skeletons and coordinated hydrogens.
着重从***骨架和配位氢相互作用观点讨论了***的成键。 - It is speculated that the zwitterionic form of arginine exists in the gas phase. Due to a large number of hydrogens in the molecule, the study of the intramolecular interaction of arginine is very interesting.
一般认为，气相中精氨酸的双电性和中性构型可以共存。同时由于精氨酸中存在众多能参与形成氢键的氢原子，研究精氨酸分子内相互将会非常有意思。 - Generally, in Mannich reaction aldehydes, ketones or aromatic compounds containing active hydrogens as acid components and secondary amines as alkaline components were utilized.
但一般Mannich反应都是以醛、酮或含活泼氢的芳烃作为酸性组分，二级胺为碱性组分。 - The head group of soluble additives formed hydrogen bonds with the hydrogens in the hydroxyl and amine groups at the asphaltene surface.
可溶性添加物通过头部官能团与沥青质表面杂原子的羟基和氨基中的氢形成分子间氢键，从而吸附在沥青质表面。