均差

Meta analysis was used to comprehensively quantitatively analyze the upper lip with esthetic plane and soft tissue plane before and after extraction and nonextraction treatment. According to homogeneity test, fixed effect model and random effect model were adopted to calculate weighted mean difference and 95% confidence interval (95% CI).

运用meta分析技术对拔牙与非拔牙矫治前后上下唇与审美平面及软组织平面的距离进行综合定量分析，根据资料异质性检验，采用固定效应模型及随机效应模型，计算合并加权均数差及其95%CI。

The above results showed that physiological AAI pacing maintained a normal EAS and VAS, and improved or enhanced VSS; while nonphysiological VVI pacing and physiological DDD pacing induced the decrease in VSS due to an abnormal EAS and VAS. Furthermore, with increasing the pacing rate, VSS was markedly decreased.The quantitative comparison of parameters of left ventricular systolic function obtained by computerized ERNA showed that AAI pacing induced the significant increases in ventricular ejection rate and stroke volume with concomitant shortening of ejection time.

应用计算机-ERNA相位分析技术，对13例生理性AAI、13例非生理性VVI及6例生理性DDD患者，分别进行等相位电影，相位图，相位直方图和VSS参数的静动态观察和定量比较，结果显示：AAI起搏可维持正常EAS和VAS，心室相位均匀一致，并且VSS参数-相角程，半高宽和峰相位标准差均较起搏前分别降低，提示起搏后VSS有所改善或增强。

Results:Among 11 cases of ectopic testes, two were located in femoral canal and had orchiectomy because of severe atrophy. Among the other 9 cases, one was in perineum, one in lateral to the scrotum, seven in superficial inguinal pouch of Denis Browne.

结果：11例异位睾丸中，2例位于股管因发育太差行睾丸切除；1例位于会阴，1例位于阴囊外侧，7例位于腹外斜肌腱膜浅面的Denis Browne袋中，均行同侧睾丸固定术。

Two kinds of high aluminum alloys were not suffered from both intergranuler corrosion and stress corrosion craking when the aluminum overlayer was perfact.

两种包铝高强铝合金板材在包铝层完好时均对晶间腐蚀和应力腐蚀裂开的敏感性差。

Children snoring at night, especially if severe snoring, sleep was frequently interrupted, not a good night's rest, the spirit of the day, poor appetite, as well as insufficient calorie intake of food over time, resulting in growth retardation in children, height, weight will be the same year is lower than the normal children, and lower body resistance, susceptibility to chronic respiratory and breathing difficulties in the situation can lead to breast, pectus excavatum, or pulmonary heart disease, individual children is also reflected in exophthalmos.

小儿夜间睡眠打鼾，特别是重度打鼾的话，睡眠经常中断，夜间得不到很好的休息，白天精神、食欲差，以至摄入的食物热量不足，久而久之，导致小儿生长停滞，身高、体重均会低于同年的正常宝宝，而且，身体抵抗力降低，易患慢性呼吸和处在呼吸困难的状况，可导致鸡胸、漏斗胸，甚至肺原性心脏病，个别小儿还表现为眼球突出。

Results: The male patients appeared more than females in spinal cord AVMs, but the occult intramedullary AVMs had the same morbidity The patients with intramedullary AVMs and perimdeullary AVF were younger, in contrast, patients with dural AVF were usually older than 40 years of age. The intra - medullary AVMs were most common located in the cervical and thracic - lumbar spinal cord, the perimedullary AVF and dural AVF were most seen in the low thracic of lumbar region. The most common initial symptom associated with intramedullary lesions was accute onset where as the progressive aggravation was the most common presenting symptom in cases of dural AVF. The prognosis of the patients with intramedullary lesions had hemorrhage was worse than who without hemorrhage.

结果：脊髓AVM s中，隐匿型AVMs无明显的性别差异，余各类型男性均多于女性；髓内AVMs、髓周AVF以青少年多见，硬膜型AVF发生于中老年；髓内AVMs多见于颈髓及胸腰段脊髓，髓周AVF及硬膜型AVF多见于胸腰段；髓内AVMs以急性起病多见，髓周AVF表现为进行性加重，少数可急性发作，硬膜型AVF以慢性起病多见；髓内出血者预后较无出血者差。

Photosynthetically available radiation, water vapor deficit and air temperature all related to net ecosystem CO2 exchange significantly during daytime.

光合有效辐射、饱和水汽压差以及气温均对昼间的净生态系统CO2交换有着显著的影响。

Polyimide films capped with nonreactive phthalimide end groups were synthesized with theoretical number average molecular mass of 10000 and 30000 calculated using the Carothers equation. The effect of end-capper on the thermal properties was studied by investigating the change of the glass transition temperature T(subscript g of films after cured at high temperature.

制备了经邻苯二甲酸酐封端的理论数均分子量为10000和30000的聚酰亚胺薄膜，通过差示扫描热分析测定薄膜高温热处理前后玻璃化温度的变化，研究了PA封端对ODPA/ODA聚酰亚胺薄膜热稳定性能的影响。

Results In 9 cases of endometrial biopsy of materials by uterine curettage, the cells of endometrial stromal sarcomas of 6 cases were well differentiated and like stromal cells of endometrial hyperplasia; the cells of endometrial stromal sarcomas of 3 cases were poor differentiated, the cells of 2 were like that of malignant lymphoma, and another like that of pleomorphous sarcoma. In 9 cases were found the distribution of vessels cluster like endometrial corkscrew small artery. The tumor cells were grew along lymphatic or protruded in lymphatic, and there were small islands or small pieces of tumor cells in the interspace of muscles in 2 cases. The contrastive observation of the specimens of resected uterines of 9 cases confirmed the valve of above features to the confessed diagnosis of endometrial stromal sarcomas in the materials of endometrial biopsy or uterine curettage.

有3例分化差者，其中2例酷似恶性淋巴瘤，1例酷似多形性肉瘤。9例均见簇状分布的子宫内膜螺旋小动脉样的小血管分布，2例见瘤组织沿淋巴管和突入淋巴管内生长及小片平滑肌组织的肌间隙内有小灶状或小片状瘤组织分布。9例子宫切除标本的对比观察，进一步证实了上述特征对宫内膜活检或刮出物确诊子宫内膜间质肉瘤的价值。

Objective Pulmonic carcinoma is the most common thoracic cancer,including small cell lung cancerand non-small cell lung cancer.

目的肺癌为胸外科常见恶性肿瘤，可分为小细胞肺癌与非小细胞肺癌；目前肺癌的发病机理尚未纯粹明了，肺癌的早期诊断、治疗效果均较差。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。