无双的

Zhejiang SF Oilless Bearing Co., Ltd is the largest manufacture of China sliding bearings. It's certificated as "AAA" level company and ISO9001 and QS9000 system control.It's Zhejiang province Tech Zone for its first-class researchers and fine equipments.

浙江双飞无油轴承有限公司，是中国生产滑动轴承系列产品的龙头企业；信用&AAA级&企业；浙江省高新技术企业；ISO9001和 QS9000质量体系认证单位。

Efficient conversion of pentaerythrite with carbonyl compounds,aldehyde or ketone,to the corresponding pentaerythritol dialdehyde or diketone compounds in the presence of ammonium hydrogen sulfate under microwave irradiation without solvent was described.

无溶剂微波照射下，通过硫酸氢铵催化季戊四醇和醛、酮反应合成了季戊四醇双缩醛、酮化合物。通过IR和1HNMR对产物结构进行了表征，研究了反应条件对产率的影响，最佳反应条件为微波照射功率750 W，照射时间1.5 min

In order to study the main influence factors of the CBR value and CBR characteristics of phyllitic slate,the CBR tests of the subgrade with materials of weathered soft-rock from the Wu-Guang Railroad Passenger Dedicated Line were done.

从颗粒组成、矿物成分以及泡水时间、最大颗粒粒径和击实次数几方面研究了其对填料CBR值的影响，并对影响因素采用无重复双因素方差分析方法进行了显著性分析。

Feb. 6, 2004 Valproic acid has no effect on pain in polyneuropathy, according to the results of a randomized, double-blind, placebo-controlled study published in the Jan.

Feb。 6， 2004 -根据一项随机、双盲及以安慰剂为对照组的研究结果显示，Valproic acid对多数神经性疼痛无疗效。

Our study focused upon the precentral gyrus to determine whether any signal changes could be detected in ALS patients; and to determine whether riluzole can reverse corticomotoneuron damage in patients with ALS.

质子磁共振波谱是一种可以无创性定量测定在体脑内生化物质的方法，在对ALS病人双侧大脑中央前回进行质子波谱分析后显示：（1）NAA/Cr （N-乙酰门冬氨酸/肌酸）比值在ALS病人上显著降低，P.01。

Letting the commonly used double-staged 2K-H typed differential mechanism be combined with the overrunning clutch this method achieved the operation without differential while the settlings were on sedimentation .

这种方法将常用双级2K-H型差速器与超越离合器结合在一起，在沉积物沉降时实现无差速运行，从而避免了相对运动所带来的不良效果。

The technology for production of sugarless carrot yoghurt was studied in the paper.

研究无糖双歧杆菌胡萝卜酸奶的工艺。

there is no need to insertion a temporary pacemaker for patients with chronic bifascicular block but without symptoms and atrio-ventricular block. teap is a easily way to evaluation atrio-ventricular conduction ability quantizely.

术前无症状不伴有房室传导阻滞的慢性双支阻滞病人没必要常规安装临时起搏器，食道心房起搏对评价房室传导功能有量化效果且简单易行。

There is no need to insertion a temporary pacemaker for patients with chronic bifascicular block but without symptoms and atrio-ventricular block. TEAP is a easily way to evaluation atrio-ventricular conduction ability quantizely.

术前无症状不伴有房室传导阻滞的慢性双支阻滞病人不必常规安装临时起搏器，食道心房起搏对评价房室传导功能有量化效果且简单易行。

BMC and BMD were measured by dual energy X-ray scanning.The results showed that the BMC and BMD of tuberositas tibiae in Gukang group were significantly higher than those in OVX group,but there was no significant difference between Gukang group and estrogen group.

通过双能X线扫描，结果显示：给药3个月时骨康组大鼠胫骨干骺端处的BMC和BMD显著高于造模组；骨康高、低剂量组与阳性对照组无显著差异。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失