1)  mono-Schiff base
单齿席夫碱
1.
(~1H) NMR and IR spectra showed that when recrystallized from ethanol or dried above 50 ℃ the transference of mono-Schiff bases 2ad to Schiff bases 1ad happened.
报道了在非极性溶剂如四氯化碳中,乙二胺与芳香醛在超声波辐射下高产率(92%~96%)区域选择性合成单齿席夫碱RCH=NCH2CH2NH2,并用NMR,MS,IR和元素分析对其结构进行表征。
2)  single tooth
单齿
1.
By means of simulating deep hole conditions and by using three kinds of representative cores,experimental data of the load and displacement,confining pressure-rock-breaking volume by unit energy and confining pressure-breaking pits volume are measured for cone bits single tooth under different confining pressures.
为牙轮钻头的设计提供可靠的试验数据,利用模拟深井井筒试验架模拟深井钻井环境,选取具有代表性的3种岩心进行试验,测量得到了牙轮钻头单齿在不同的围压条件和岩石下载荷、位移、围压—单位能量破碎体积以及围压—破碎坑体积等试验数据。
3)  single-tooth
单齿
1.
The single-tooth cutter, in this paper, cuts gear by forming process.
插齿刀是通过啮合切削齿轮的 ,而本设计的单齿插齿刀是通过成形法切削齿轮的。
4)  single tooth-enclose
单齿圈
5)  bis-monodentate
双-单齿
1.
Coordination polymer {[La(NO3)3]2·L3}n {L= 1,4-bis{[2'-(benzylaminocarbonyl)-phenoxyl]-methyl} benzene has been synthesized by the reaction of an aryl amide type bis-monodentate ligand and La(NO3)3·6H2O, and the crystal structure of this complex has been characterized by X-ray diffraction analysis.
通过硝酸镧和双-单齿芳香酰胺型配体L {L=1,4-双[(2’-苄胺甲酰基苯氧基)-甲基]苯}之间的反应得到了配位聚合物{[La(NO3)3]2·L3)n,并用X射线单晶衍射测定了配合物的晶体结构。
6)  monodentate ligands
单齿配体
参考词条
补充资料:单猪屎豆碱
分子式:
CAS号:

性质:又称猪屎豆碱,野百合碱,大叶猪屎豆碱,农吉利碱I,可洛他林,大叶猪屎青碱。白色棱晶(无水乙醇),味苦,微有异臭,熔点197~198℃(分解),旋光度-56.4°(1%,氯仿),旋光度-60°(氯仿),-54.7°(c=5.054,氯仿)。溶于无水乙醇和甲醇,易溶于氯仿,略溶于乙醚、丙酮,微溶于苯和水,不溶于石油醚。存在于豆科猪屎豆属植物野百合(农吉利)(Crotalaria sessilifora L),大叶猪屎青(C.assamica)中。抗肿瘤药,主要局部应用治疗皮肤鳞状细胞癌,基底细胞癌,对宫颈癌和阴茎癌也有效。

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