Thus, in this dissertation three novel phosphine-catalyzed annulation reactions of electron-deficient conjugated systems have been systematically investigated, and the following results have been achieved. 1.

1、

Cantilever Racking: It is fit for long material, annulation, boards, and irregular goods.

悬臂式货架适用于放长物料，环形物料，板材和不规则物料。

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2、

Follow-up Measurement of Plastic Mitral Annulation with 2-DE and Color Doppler Ultrasound

人工二尖瓣环成形术后的二维与彩色多普勒超声随访检测

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3、

The Clinical Observation of Chinese Crude Drug Treatment by Stages on Menoxenia after Putting Annulation

中药分期治疗放环后月经不调的临床观察

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4、

On the Mixed Fundamental Problem in an Elastic Annulation

弹性圆环域的混合基本问题

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5、

An anomalistic month refers to successive returns to perigee, a period of 27.55455 days.

一个近点月指的是返回到近地点相继的时间，为27.55455天。

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6、

It is approximately the LCM (lowest common multiple) of the synodic period (29.53 days), draconic period (27.21 days), and the anomalistic period (27.55 days) of the Moon.

沙罗周期日数约为朔望月周期（29.53 日）、交点月周期（27.21 日）和近点月周期（27.55 日）的最小公倍数。

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7、

Peeling is an important annulet in potato processing, Methods of peeling which have been used at present all has their limitation.

马铃薯去皮是所有马铃薯制品加工工艺过程的重要环节，目前存在的各种去皮方法都各自有其一定的局限性。

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8、

Experimental Study of Flow and Heat Transfer of Narrow Annuli with Bilateral Heating

窄缝环形通道内单相液体传热和压降的实验研究

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9、

The Flow stability for Power& law Fluid Through Concentric Annuli

幂律流体在同心环形空间中流动的稳定性

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10、

A New Method for the Study of Fluid Flows in Eccentric Annuli

研究流体在偏心环空内流动的新方法

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11、

Power law fluid flow through eccentric annuli flow rate and pressure gradient

幂律流体在偏心环空中的流动&流量与压力梯度

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12、

Cancellation: Voiding a debt by annulling or paying it.

撤销，解除[债务]：以取消或偿付的办法使一笔债务失效

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13、

Their most ambitious plan was to annul the Bothwell marriage

他们野心勃勃打算废除和博思韦尔的婚约

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14、

The act of revoking or annulling or making void.

取消、废除或使无效的行为。

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15、

Effect on the Yield of Artemisia annul using Different Amount of Fertilizer of N, P, and P

不同氮磷钾用量对黄花蒿产量的影响

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16、

Annuls inappropriate decisions and orders of the people's government at the corresponding level;

撤销本级人民政府的不适当的决定和命令；

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17、

Analysis of Measuring Results of Annul Total Expenditure on Health by the Method of Health Financing Re-source

安徽省卫生总费用筹资来源测算结果分析

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18、

Under prevailing law, the government cannot annul such marriages.

按现行法律，政府无权宣布这类婚姻无效。

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19、

Distribution of annul largest magnitudes of earthquakes and confidence limit research

年最大地震震级分布置信限曲线和置信度研究

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20、

Annul Review of Fuel Oil Market and its Prospect

燃料油市场年度回顾及展望

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