硬

As a cutting means of machining hard gears with high precision shaping technology has been wildly used at present. Compare with traditional methods for machining the gard gearsgrinding gobbing shaving and honing shaping is almost the optimum in the case of special structuressuch as the internal gear dual gear and gear with land corner.

插齿工艺做为加工高精度硬齿面齿轮的一种切齿方法，目前已得到广泛的应用，与传统的磨齿、滚齿、剃齿、珩齿等硬齿面齿轮加工方法相比，在加工内齿轮、双联齿轮及带台肩的齿轮等具有特殊结构的齿轮方面，插齿几乎是最优的选择。

The obtained CBC was further reacted with stearic acid at 140℃ and hexadecyl alcohol at 180℃ in turn to form citric acid-beta-butylene glycol-citric acidstearic acid-hexadecyl alcohol claw large molecule.

以1，3-丁二醇、柠檬酸为原料，设计、合成了以1，3-丁二醇为核心的柠檬酸－1，3-丁二醇－柠檬酸爪状物小分子；再用酯化反应依次与带有功能化集团的硬酯酸、十六醇接枝合成了多元酯类爪形大分子柠檬酸－1，3-丁二醇－柠檬酸－硬酯酸－十六醇。

Flowers axillary, 2 or 3 in a cluster, rarely solitary. Pedicel 0.6-1.5 cm, often recurved, densely hirsute; bracteoles caducous. Sepals broadly ovate, 5-14 mm, outside densely ferruginous hirtellous, apex acute.

花梗 0.6-1.5厘米，经常下弯，密被长硬毛；小苞片早落宽卵形的萼片，5-14毫米，外面密被铁锈色具微糙硬毛，先端锐尖的。

Cilia of ocrea 1-1.2 cm; stems glabrous, sometimes sparsely hispidulous; leaf blade sparsely appressed hispidulous on both surfaces; achenes 2.5-3 mm.

托叶鞘的缘毛1-1.2厘米；无毛的茎，有时疏生短硬毛的；叶片疏生贴伏具短硬毛在两面；瘦果2.5-3毫米 20 P 。 japonicum 蚕茧蓼

To valuate efficacy and the incidence of complication and homodynamic changes in the combined spinal-epidural anesthesia and continuous epidural anesthesia in complete hysterectomy.

目的 比较联合腰麻硬膜外麻醉与单纯硬膜外麻醉在妇科全子宫切除术中的麻醉效果，并发症发生率和血流动力学的影响。

Methods Sixty patients underging hypogastric operation were divided randomly into the control group by 0.75%ropivacaine hydrochloride CEA and the experiment group by 0.894%ropivacaine mesylate CEA.

方法60例下腹部手术患者随机分为两组(n=30)：对照组应用0.75%盐酸罗哌卡因持续硬膜外麻醉；试验组应用0.894%甲磺酸罗哌卡因持续硬膜外麻醉。

Applicable to soft to medium hard formation with hard interbedded layers.

适用于软至中硬及含有硬夹层的地层。

Anteroposterior interceptive chop for splitting nucleus in phacoemulsification is an effective, convenient and safe method to operate on hard nucleus cataract.

硬核白内障超声乳化手术中双向劈核法碎核彻底、操作简便、安全有效，为粉碎硬核的一种好方法。

METHODS:Two hundred and seventy-one eyes of 219 patients with hard nucleus cataract, grading level IV or V, were operated with anteroposterior interceptive chop method for splitting the nucleus, and then with phacoemulsification. RESULTS:The hard nucleus of the 271 eyes were successfully routed. The average phaco time was 57.4 s.

对219例(271眼)级以上硬核白内障采取前后夹击劈核法，经充分水分离和水分层，吸除硬核前的皮质及软核后，乳化头退至前囊口上缘，劈核器轻压核下方，停止灌注让核上缘随前房变浅脱出囊袋口，乳化头顺势抵住核上缘，灌注加深前房后，乳化头滑入核后面，劈核器置核前面，前后夹击将核劈碎乳化吸出。

Results Rigid bronchoscopy showed foreign bodies in the main bronchus or bronchus intermedius of 42 patients, while spiral CT localized airway foreign bodies in the same patients.

结果 硬支气管镜检查发现42例异物在主支气管或支气管叉，胸部CT扫描显示相同位置异物；硬支气管镜诊断为阴性的9例中，胸部CT检查6例为真阴性而3例为假阳性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。