牵引

In the preceding quarter, it appeared, the Tenth Three-Year Plan's quota for bootlaces had been over-fulfilled by 98 per cent

这些功率为4800千瓦138吨重的B伊陆Bo机车是为牵引4000吨重的列车而设计的，当坡度为0.6%时，时速为48公里；小时。

Owing to the installation of vertical pentagonal rollers in curved track sections and installation of steel rope clampers to the mining cars, the traction steel ropes are brought into restriction and the mining cars can travel along the curved tracks. Thereby, the track transportation system consisting of hoisting cranes, tracks and mining cars is applied in the smallradius longcurve inclined shafts.

通过在轨道曲线段安设五花立辊、给矿车安装绳卡器等一系列新技术，实现了约束牵引钢丝绳，从而使矿车按曲线方向行驶的目的，以及&提升机+轨道+矿车&的有轨运输系统在小半径、长曲线斜井中的使用。

A pin placed through the condyles of the humerus provides to upper arm.

用针穿过肱骨的两髁牵引上臂。

Its characteristics are also conveyors carrying material of the traction power transmission parts, transmission and other machinery that a significant difference.

其特点是承载物料的输送带也是传递动力的牵引件，这与其他输送机械有显著的区别。

Twelve points insure maximum traction in all conditions, whether you are climbing up steep slopes or ice couloirs.

12点，投保的最高牵引在所有条件下，无论你是爬上陡峭的山坡或冰

To study the effect of extroral appliance in treatment of anterior crossbite and crowded dentition.

目的 探讨口外弓及前方牵引装置对混合牙列期或恒牙列早期前牙反并牙列拥挤病例治疗的有效性。

PURPOSE: To evaluate the effect of maxillary protration in skeletal anterior crossbite patients in early permanent dentition and determine the optimal timing for orthopedic treatment.

目的：评价恒牙早期骨性反患者使用上颌前方牵引器治疗的疗效，确定矫形治疗的合适时机。

Key words: anterior crossbite;skeletal class iii;early treatment; maxillary protraction; cephalometric analysis

前牙反牙合；骨性ⅲ类；早期治疗；前方牵引；头影测量分析

8Mm (5-11mm) and the anterior crossbite were all released.

牵引结束后，关节和皮肤症状即消失。

Results After 3~6 months, anterior crossbite cases are cured. 6~12 months later, crowded dentition cases were cured.

结果 经过治疗，使用前方牵引装置3~6个月，反纠正；使用口外弓装置6~12个月，解除牙列拥挤。

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