英语人>网络例句>卤素的 相关的搜索结果
网络例句

卤素的

与 卤素的 相关的网络例句 [注:此内容来源于网络,仅供参考]

Distribution of illumination of metal halide lamp and halogen lamp were analyzed and compared.

金属卤化物灯和卤素灯在这一光照度的诱集范围之比为1 66∶1。

This invention provides compounds of Formula; wherein: R is a moiety selected from the group: and n is an integer of 1 or 2; R is selected from hydrogen, amino,-NRR, alkyl of 1 to 12 carbon atoms optionally substituted, aryl of 6, 10 or 14 carbon atoms optionally substituted, alkenyl of 2 to 12 carbon atoms optionally substituted, alkynyl of 2 to 12 carbon atoms optionally substituted, halogen, and a 5 to 10 membered heteroaryl ring optionally substituted, having 1 to 4 heteroatoms independently selected from N, O and S; R is selected from hydrogen, alkyl of 1 to 12 carbon atoms optionally substituted, aryl of 6, 10 or 14 carbon atoms optionally substituted, alkenyl of 2 to 12 carbon atoms optionally substituted, vinyl, alkynyl of 2 to 12 carbon atoms optionally substituted and halogen; R is H, alkyl of 1 to 12 carbon atoms optionally substituted, cycloalkyl of 3 to 8 carbon atoms, bicycloalkyl of 5 to 10 carbon atoms or aralkyl optionally substituted; R is OH or -OH; R and R are each independently H or alkyl of 1 to 12 carbon atoms or when optionally taken together with the nitrogen atom to which each is attached form a 3 to 8 membered saturated heterocyclyl ring; R is alkyl of 1 to 12 carbon atoms optionally substituted; or a tautomer or pharmaceutically acceptable salts thereof.

本发明提供式的化合物;其中:R 1 为选自基团和的部分;n为整数1或2;R 2 选自氢、氨基、-NR 6 R 7 、具有1到12个碳原子的视情况经取代的烷基、具有6个、10个或14个碳原子的视情况经取代的芳基、具有2到12个碳原子的视情况经取代的烯基、具有2到12个碳原子的视情况经取代的炔基、卤素和具有1到4个独立地选自N、O和S的杂原子的视情况经取代的5元到10元杂芳基环;R 3 选自氢、具有1到12个碳原子的视情况经取代的烷基、具有6个、10个或14个碳原子的视情况经取代的芳基、具有2到12个碳原子的视情况经取代的烯基、乙烯基、具有2到12个碳原子的视情况经取代的炔基和卤素;R 4 为H、具有1到12个碳原子的视情况经取代的烷基、具有3到8个碳原子的环烷基、具有5到10个碳原子的双环烷基或视情况经取代的芳烷基;R 5 为OH或-OH 8 ;R 6 和R 7 各自独立地为H或具有1到12个碳原子的烷基,或当视情况与其所连接的氮原子连接在一起时形成3元到8元饱和杂环基环;R 8 为具有1到12个碳原子的视情况经取代的烷基;或其互变异构体或医药学上可接受的盐。

As a large powerful company, it owns several filiales: lamp ornament fittings filiale,machine process filiales, plastic products filiable,which can offer quartz lamp holder, golden halogen, halogen lamp holder,E27 lamp cap ,GU10 lamp cap,opital fiber technicsfittings,all kinds of hardware machine fittings and not standard fittings.We can also inject and blow all kinds of plastic products and we can insure that the pattern drawing, making and deliver of the goods are in time.

公司实力雄厚,下设灯饰配件分厂、机加工分厂、塑料制品分厂,能够及时地为广大客户提供石英灯座、金卤、卤素灯座、E27灯头、GU10灯头、光纤工艺配套件、各类五金机械配件及非标配件、注塑各类塑料产品及吹瓶各类塑料产品,并充分保证起模、出样以及生产交货的快捷及时。

According to the H NMRstudy, it was found that the protons on the cyclopentadienyl ring of 〓 were not splitted, but when one proton on the cyclopentadienylring was substituted by methyl, that is in〓 complexes, thefour protons on the ring were splitted into four groups,the 〓 between the onesignal and the others is large, the total splitting is over 2ppm. The splittings werealso affected by the halides linked with the titanium, they increase according to theorder of CI, Br, I. By the study of the 〓 Sn NMR, it is found that the chemicalshifts of 〓 are present in low field. It is assume that the large space strain causesthe angles of the tin linked with ligands deviate from the normal tetrahedral anglesresults low field shift for 〓Sn. And by MS study,there were no molecular ions for 〓 complexes in the spectra. However, for 〓 when X=CI,Br,NCO and Ar is tolyl or phenyl group,there were molecular ions,but theirabundances were very small,and no that for the iodide was found.

钛上的卤素对茂环氢的裂分也有影响,依〓,Br,I顺序,卤素对茂环氢的裂分依次加大;通过对〓的研究发现,以上这些化合物〓的化学位移都出现在低场,认为大的空间张力造成的锡的键角偏离正常的锡的四面体键角是造成〓化学位移出现在低场的原因;对这些化合物质谱的研究发现,〓系列化合物得不到分子离子峰,而〓系列的化合物,当X=〓,NCO和苯环上不带取代基或只带甲基时,则出现分子离子峰,但丰度很低,而相应的碘化物和其它化合物则没出现分子离子峰。

Third, nearly seven times the service life of halogen lamps; As already mentioned, halogen light-emitting principle is caused by a tungsten filament heating, while the tungsten filament in the long term there will definitely be blown under high temperature damage, so they are the life of 200 ~ 300 hours or so.

第三,近7倍于卤素灯的使用寿命;前面已经讲到,卤素灯的发光原理是由钨丝发热所致,而钨丝在长久的高温下难保不烧断损坏,所以它们的使用寿命只有200~300个小时左右。

Incandescent lamp, tungsten halogen lamp, high pressure mercury lamp, metal halide lamp, etc.

利用热能激发的光源,如白炽灯、卤钨灯、高压汞灯、金属卤素灯等。

The present invention relates to sulphonyloxazolamines of general formula, wherein R, R represent independently from each other H, A,-(CH2)n-Ar or alkenyl with 2-6 C atoms, R and R together also represent a mononuclear saturated heterocycle with 1-2 N, O and/or S atoms, Z is H, A, CF3, NO2, Hal, OH, OA, NH2, NHA or NA2, A represents alkyl with 1-6 C atoms, Ar is Z-monosubstituted or Z-disubstituted phenyl, halogen is F, Cl, Br or I, n is 1 or 2 or the physiologically acceptable salts or solvates thereof.

本发明涉及式磺酰基∴唑胺或其生理上可接受的盐或溶剂化物,其中R 1 ,R 2 每一个相互独立为H、A、-(CH 2 )n-Ar或具有2到6个C原子的链烯基,R 1 和R 2 也一起为具有1到2个N、O和/或S原子的单核饱和杂环,Z为H、A、CF 3 、NO 2 、卤素、OH、OA、NH 2 。NHA或NA 2 ,A为具有1到6个C原子的烷基,Ar为被Z取代的或Z二-取代的苯基,卤素为F、Cl、Br或I,n为1或2。

Low levels of the crust, melting point 3180 ℃, boiling point 5627 ℃, the relative density of 2053, the external F electronic structure 5d56s2, reaction time will be lost 1-7 electronic, but also can capture an electron, so oxidation number of 0,± 1, 2 , 3, 4, 5, 6 and 7, rhenium with the halogen in the fluorine, chlorine, bromine reaction halides dissolved in water, can dissolve in nitric acid and ammonia hydrogen peroxide solution, but do not dissolve in hydrochloric acid.

地壳中含量很低,熔点3180℃,沸点5627℃,相对密度2053,外围F 电子结构5d56s2,反应时会丢失1—7个电子,也可捕获一个电子,所以氧化数为0、±1、+2、+3、+4、+5、+6和+7,铼能与卤素中的氟、氯、溴反应生成溶于水的卤化物,能溶于硝酸和含氨过氧化氢等溶液,但不溶于盐酸。

Halides: The general name for a large class of compounds formed by halogen s with metals.

卤化物:由卤素和金属直接结合而成的一大类别的化合物。

Halogen, proton acids, sub-halogen acid are electrophilic reagents, olefin addition reaction is the electrophilic addition reaction .

卤素、质子酸,次卤酸等都是亲电试剂,烯烃的加成反应是亲电加成反应。

第4/16页 首页 < 1 2 3 4 5 6 7 8 9 ... > 尾页
推荐网络例句

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。