有四种

Main products of OMMA are High Frequency Electrotome (DD-2 serials) with independent intellectual property rights and two serial accessories of High Frequency Electrotome, such as Bipolar Diathermy Forceps and Medical Pedal Switch. Bipolar Diathermy Forceps has four regular models, such as gun-shaped forceps, gun-shaped pincett, straight forceps and straight pincett, and subdivides into 48 specs.

现主要产品有高频电刀DD-2系列产品，具有独立的知识产权；有高频电刀配件两大系列：双极电凝镊已形成比较稳定的四种型号(枪状镊、枪状弯镊、直镊、直弯镊)及48个规格；医用脚踏开关系列有单联和双联两种型号3个规格。

Held in place by clamps, braided aluminum terminal straps in 25, 50, 100, and 200 ampere ratings, are available in two primary styles: Single Loop (for connecting binding post to element) and Double Loop (for connecting element to element).

用夹子固定，终端喷铝部有25，50，100和200等四种额定安培电流，可有三种形式：单环，双环，还有接线柱间的连接。

After spinal nerve injury, somas of the primary sensory neurons in segmental DRG show hyperexcitability, characterized with spontaneous firing .

由于HCN2、3、4在所有DRG神经元上都有表达，而小神经元上没有HCN1表达，因此在大、中神经元上HCN的四种亚型都有表达，其中以HCN1为主；在小神经元上只表达三种HCN亚型。

Under light microscope, on H-E stain section, four types cells can be distinguish: cells with weak basophilic fibrillar elements; cells with acidophilic granular substance; cells with strong basophilic fibrillar elements and ciliated cells. In the basal lamina region under gland epithelium, there are a few connective tissue; Surface view of the hypobranchial gland could be see by scanning electron microscope, there are cilia and different kinds of secretions distributed. Ultrastructure of the hypobranchial gland could be understand by transmission electron microscope, supporting cells, sensory cells and seven types gland cell were observed to form the glandular epithelium; cells with much rough endoplasmic reticulum,smooth muscle fiber and nerve endings were found beneath glandular epithelium, among basal lamina region.

光镜下H-E染色切片中腺上皮区仅可以区分出四种类型的细胞：弱嗜碱性纤维样细胞、强嗜碱性纤维样细胞、嗜酸性颗粒分泌细胞和纤毛细胞等；腺上皮下的基底膜区有少量结缔组织存在；扫描电镜下可以观察到鳃下腺表面的纤毛及腺细胞的分泌物等情况；透射电镜下观察到腺上皮中有支持细胞、感觉细胞和7种类型的腺细胞；近基底膜区观察到富含粗面内质网的细胞；基底膜间为薄层疏松结缔组织，内含肌细胞及神经末梢等结构。

The detective rate, the diagnose accordance rate, detection rate located coincident rate and absorbent gland metabasis rate were compared.

结果 B超、气钡双对比造影、结肠镜、螺旋CT扫描对病灶的发现率分别为64.5%、92.6%、94.1%、88.9%，诊断符合率分别为50.6%、83.6%、89.6%、80.2%，B超与另三种检查比较，病灶发现率、肠癌诊断符合率有显著性差异；肿瘤部位检查符合率四种检查无差异；B超和螺旋CT的淋巴结转移检出率有显著差异。

Group in the periodic table there are silver-white metallic luster of the solid metal transition element, atomic number Z = 26, atomic weight of 55847, chemical symbol Fe, there is a stable F isotope 5626Fe and a radioisotope 5526Fe, content of 5% of the earth's crust, accounting for elements of in the fourth place, the metal in the second melting point 1535 ℃, boiling point 2750 ℃, the relative density of 786, the external electronic structure 3d64s2, chemical reactions 2-6 tram F-volatile son, oxidation number of 0, 2, 3, 4 , 5 and 6, the chemical nature of the metal element is very lively, in the humid air combined with oxidation, but also directly with the sulfur, phosphorus, silicon, carbon together.

周期表中Ⅷ族有银白色金属光泽的固体金属过渡元素，原子序数Z＝26，原子量55847，化学符号Fe，有一种稳定F同位素5626Fe和一种放射性同位素5526Fe，地壳中含量5％，占元素中第四位、金属中第二位熔点1535℃，沸点2750℃，相对密度786，外围电子结构3d64s2，化学反应时易丢失2—6个电F子，氧化数为0、＋2、＋3、＋4、＋5和＋6、化学性质很活泼的金属元素，在潮湿空气中能与氧化合，也能直接与硫、磷、硅、碳化合。

This study was conducted at 10 subtidal and 4 intertidal sampling sites in Dongsha Atoll by SCUBA diving and snorkeling during May 13-20 and August 20-22, 2004. A total of 133 mollusk species were collected, within which Muricidae being the most abundant family with 16 species, followed by family Conidae with 14 species. Twenty five species were first recorded in Dongsha Atoll. Species with economical value, e.g.

於2004年5月13日至20日和8月20日至22日期间在东沙岛海域十个亚潮带测站和四个潮间带测站进行底棲软体动物调查，经利用潜水观察记录和採集標本方式，目前已整理出133种软体动物，以骨螺科16种最多，其次为芋螺科14种，其中更有25种为东沙岛首次记录到之种类。

Another kind of Venus corset is underwear and I have seen only one of these, although I know more that exist; I once attended a dance in Palo Alto where there were four women in a Venus corsets of this type.

另一种维纳斯束衣是内衣，虽然我知道有过多种这类的束衣，但是我只亲眼见过一种。我曾经在Palo Alto观赏过一种舞蹈，有四个女人就穿着这种维纳斯束衣。

A total of 175, 120, 136 and 149 species were caught by sergestid shrimp mid-trawl, planktonic shrimp mid-trawl, bottom shrimp trawl and shrimp beam trawl, respectively.

正樱虾中层拖网混获种数175种，中型毛虾中层拖网120种，底层虾拖网136种，桁杆式虾拖网149种，四种渔业混获种类合计高达347种，而总渔获种类有379种。

We found that Rhodnius prolixus, a triatomine bug feeding on the blood of various tetrapods and vector of Chagas' disease in humans, carries in its genome four distinct transposon families that also invaded the genomes of a diverse, but overlapping, set of tetrapods.

具体来说，长红锥蝽（一种以四足动物血液为食、是人类锥虫病传播媒介的虫子）的基因组中有四个截然不同的转位子家族，它们入侵包括负鼠和松鼠猴在内的一系列不同四足动物的基因组。

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