筛的

Objective To develop a kind of preliminary screening acoumeter for the prevention of noise-induced hearing loss. Methods This portable preliminary screening acoumeter based on ARM7 LPC2148+SD card+VS1003 can make anti-noise hearing protection.

目的 研制强噪声引起听力损伤预防和快速初筛仪，能预防强噪声给人员带来的听力损伤，并能实施听力损伤的快速筛查。

This paper takes the cylindrical boult of the 40 flour mills as the object of study,establishes the corresponding mechanics model ,connects theory to reality,designs the nut conicity,then uses the same conicity offsetting poor alignment between the nut and the cylindrical boult,decomposes reinforcingsteel radia.

以40型面粉机圆筒筛为研究对象，建立相应的力学模型，通过理论结合实际，设计螺母锥度，在螺母与圆筒筛之间采用同锥度错位配合，将钢筋的径向受力通过锥面分解到钢筋轴向一部分，使得钢筋在轴向和径向都保持尽可能小地受力。

The effects of sodium hydroxide concentration and chlorination temperature on effective chlorine content of calcium hypochlorite were tested.

测试了烧碱质量分数和氯化温度对漂粉精有效氯含量的影响，测试了分盐用标准筛目数对漂粉精有效氯含量和过筛率的影响。

In comparison with no screening program, the ICER for the vision screening program for preschool children aged 4-6, was found to be less than the threshold proposed from the World Health Organization and therefore vision screening program for preschool children aged 4-6 could be considered cost-effective.

本研究结果显示，若执行4-6岁弱视筛检计画，每多得到一单位品质校正人年所需要多花的成本均低於世界卫生组织所建议之标准阈值。本研究结果显示执行4-6岁学龄前儿童弱视筛检是具有成本效之策。

Maternal and perinatal risk factors of occurrence of R OP were analyzed. Results In the 639 infants who had been scre ened in the 6 ho spitals, ROP was detected in 69 (10.8%), in whom 23 infants (39 eyes)(3.6%) had type 1 ROP and underwent photocoagulation.

结果 六家医院NICU符合筛查标准并完成ROP筛查的患儿639例中，发现ROP患儿69例，占10.8％。69例ROP患儿中，达到阈值或阈值前病变1型需要进行眼底激光光凝治疗者23例39只眼，占3.6％。

Methods By prescreening and twice blood pressure screening,163 probands and siblings were selected,including 49 sibships with 2 siblings and 19 sibships with 3 and more siblings.All siblings underwent chronic sodium load test and cold pressure test.Results 21.5% of participants were observed to be saltsensitive.

通过预筛查和2次血压筛查共纳入163名符合入选条件的先证者和同胞(共68组，49组为2个同胞，19组为3个及以上同胞)，对受试者进行慢性盐负荷试验和冷加压试验。

The products of company mainly include Bubble-Cap Tray, Vertical Shifter Pagoda Plate Tray, High-effect HLMV Float Valve Tray, Firm-Float Valve Tray, F1 Float Valve Tray, Guiding sieve Plate Plate Tower Tray and various types of gauge tower internals products such as neat packing, random packing.

公司主要产品有泡罩塔、垂直筛板塔、高效HLMV浮阀塔盘、固阀塔盘、F1浮阀塔盘，导向浮阀塔盘、导向筛板塔盘等。各种规整、散堆填料和各种类型的液体分布器等塔内件产品。

THIS SERIES OF CIRCULAR-MOTION VIBRATING SCREEN IS SPECIAL DESIGNED FOR STONE PIT TO SIEVE SOME DIFFERENT SIZES OF STONE.

本圆振动筛系列为圆运动，是专门为采石场筛分料石设计的。

To the gradations with the same maximum nominal grain size,grey correlation was used to analyze the results. The conclusion showed that,except the 9.5 mm-maimum-nominal-grain-size gradation,Jf was influenced mostly by the subtotal triage of coarse aggregates in the third large sieve pore.

对于颗粒最大标称粒径相同的级配，使用灰色关联分析，得出结论：除颗粒最大标称粒径为9.5 mm级配外，Jf受级配中第3大筛孔分计筛余百分率影响最大。

Under endoscopy, ethmoid sinus was opened via the nasal cavity, the ethmoid cells were extirpated to uncover the fractured lamina, herniated contents were returned back to the eye socket, and the fracture zone was overlaid with septal cartilage.

手术开始在内镜直视指引下，经鼻腔开放筛窦，摘除筛房，暴露骨折的纸板，将疝入物回纳眶内，鼻中隔软骨覆盖骨折区。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。