四分的

The two wide used topologies of the main circuit of shunt active power filter which has the ability to compensate the neutral current are the three-leg split-capacitor topology and the four-leg topology.

具有中线电流补偿能力的并联有源电力滤波器主电路拓扑结构主要是三桥臂电容中分和四桥臂两种。

The 4th left rib was cut and a model of left coronary artery occlusion/release was carried outo Rats were divided randomly into 4 groups: control group without LCA occlusion (group A, n=6);I/R group(group B, n=6); ketamine(5mg.kg-1)+I/R group (group C, n=6); ketamine(10mg.kg-1)+I/R group(group D,n=6)o All rats in groups B, C , D were subjected to 30 minutes of LCA occlusion followed by 120minutes of reperfusion. Rats in group C and D were injected with 5mg.kg-1 and 10mg.kg-1 of ketamine before reperfusion, respectively. Significant electrocardiogram and color changes at the area at risk were considered indicative of successful coronary occlusion and reperfusionc Serum was exampled from left jugular vein at 30 minutes and 120 minutes during reperfusion to measure IL-6 and TNF- level by ELISA measurements. After reperfusion of 120 minutes, the heart was removed and the cardiac apex was exampled with snap-frozen in liquid nitrogen and stored at -70 C .

采用左冠状动脉前降支结扎开放建立心肌缺血／再灌注模型，健康SD大鼠24只，随机分为心包打开假手术组(A组，n=6)，缺血／再灌注对照组(B组，n=6)，5 mg·kg~(-1)氯胺酮+缺血／再灌注组C组，n=6，缺血30min后右腹股静脉注入5 mg·kg~(-1氯胺酮，10mg·kg~(-1)KTM+I／R组D组，n=6，缺血30min后右腹股静脉注入10 mg·kg~(-1氯胺酮。10％水合氯醛40 mg·kg~(-1)腹腔注射麻醉，气管切开，连接多功能监护仪记录心电图；小动物呼吸机人工呼吸，呼吸频率60次／分，潮气量2ml／100g，于左胸第四肋间打开胸腔暴露心脏，在左心耳下1mm左冠状动脉处，用丝线，眼科外用不锈钢小圆针穿过心肌浅层，稳定10min后将U型含有铜丝的胶管置于冠状动脉表面一起结扎(A组不结扎，B、C、D组结扎)；结扎开始左心室心尖部即由红色变暗，30 min后呈暗红色，心电图中出现S-T段抬高，说明缺血形成。

However, more often than not a three to eight seed makes it to the final four.

但是，往往比一7点57分种子，使得它的最后四名。

These factors suggest that, sooner or later, the penny will join the farthing(11)(one-quarter of a penny) and the hapenny(12)(one-half of a penny) in coin museums,he said.

他说：&这些事实都说明，一分硬币早晚会加入四分之一美分和半美分的行列—被送入硬币博物馆。&

In the first chapter, a brief introduction to Cranes life and works as well as comments of different periods upon The Red Badge of Courage is offered.

全文共分四章。第一章简要介绍作者生平、主要著作以及对《红色英勇勋章》不同时期的评论。

From southwest to northeast, the four main Japanese islands are Kyushu, Shikoku, Honshu, and Hokkaido.

从西南到东北，日本的四个主要岛屿分别是：九州、四国、本州和北海道。

The other lefthander to consider is Sean Henn, who has pitched in only three Grapefruit League games, giving up two runs, six hits and a walk in three innings.

其他的左投手包含Sean Henn 尚韩，他在葡萄柚联盟只有出赛三场，失两分，被敲六安及一个四坏保送在三局中。

Six years at Milan, then, for the European Champion coach, who aside from the Scudetto also obtained two second places in Serie A, after two exciting title races decided only on the final matchdays, a third place and two fourth places , the first after coming on when the season had already begun, and the second because of an unjust penalisation.

欧洲冠军教头在米兰呆了六年，除了获得一次意甲冠军以外，还有两次获得亚军，两次都是在最后一轮决出胜负，一次第三名和两次第四名，第一次是在他半途接手的第一个赛季，而第二次则是由于被罚分。

Ensure color separations, and spot-color business card printing to adapt to the user's special requirements.

四、还要能够进行分色和专色制卡，适应用户的一些特殊要求。

The intermittent chaos and subharmonics in high-order switching power converters are studied with a current-mode controlled SEPIC (single ended primary inductor converter) converter serving as an example.

以四阶电流模式控制单端初级电感变换器(single ended primary inductor converter，SEPIC)为例，研究高阶开关功率变换器中的间歇混沌和间歇分谐波现象。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。