两管的

The heavy, fluted barrel is free floated, and its rear part is enclosed by tubular shroud, which serves as a mount for integral folding bipod and carrying handle.

此外，沉重的，是免费的凹槽桶浮动，它的尾部是由管状寿衣，作为一整体装入折叠两脚架和服务进行密封处理。

Hybrids of carbonate and terrigenous sediments Carbonate with terrigenous sediments are of characteristic from Emsian to Eifelian in stable shallow-sea faciesregion in Longmenshan area, and they can be classified evidently into hybrid Ⅰ and hybrid Ⅱ(Jingbaoshi-type). Type Ⅰ produced in mud shelf setting occupied hundreds of tempestite beds in which bottom cast、 hummocky cross bedding sandstones、 coquina were inter-beddded with shales that beared a great deal of verm traces、 bioturbations、 benthic communities dominative of brachiopods. Type Ⅱ in sand-mud-marl shelf was characterized by high-energy foreshore sandbeach facies and shelly bank facies.

碳酸盐与陆源碎屑混合沉积方面对微相、相特征、旋回样式、沉积机理研究表明，龙门山地区泥盆纪稳定浅海相区Emsian期和Eifelian期混合沉积十分发育，颇具特色，明显可以划分为两种类型：混积Ⅰ型，泥质陆棚背景下发育风暴沉积组构，幕式风暴期产生具丘状层理、底流冲刷构造的钙质砂岩、介壳岩，平息期则形成具大量虫管和生物扰动的深灰色、黄绿色页岩及海百合茎灰岩，腕足动物等大量繁盛；混积Ⅱ型，砂泥灰质陆棚背景下以发育高能前滨沙滩及生物介屑滩为特色，近滨至陆棚的砂泥灰互为混合，三者比例接近，肉眼难以区别确切岩石类型。

Based on the clinical observations, biochemical analyses of serum and pathomorphological examination and biomechanical parameter determination of bone, it suggested that the disease is a mixed metabolic osteopathia comprising hyperostosis and osteoporosis, with two kinds of exostosis—eccentric type and cuffing type.

通过对钼中毒绵羊的临床观察、血清生化检验、骨骼病理形态学检查以及骨生物力学参数测定，证实成年绵羊钼中毒骨病的病性是兼有骨质增生和骨质疏松的混合型代谢性骨病。其外生骨赘有两种类型—偏心型和管套型骨赘。

Spiral steel pipe company's existing production lines, two of hot-rolled seamless steel pipe production line and four thermal expansion seamless tube production lines, the production φ219-1820 double-helical SAW pipe joints 200,000 tons,φ57-377 seamless hot-rolled 200,000 tons of steel pipes,φ377-630 thermal expansion Seamless Steel Tube 60,000 tons, product implementation SY/T5037, GB/T9711, GB/T8163, API 5L, API 5CT standards, widely applicable to oil and natural gas industry, chemical industry, general Fluid transport and infrastructure projects such as a bridge piling, sells to 27 provinces, municipalities and autonomous regions, and over 700 sales outlets, the reliable quality and high quality services to our customers has won the recognition and welcome.

公司现有六条螺旋钢管生产线、两条热轧无缝化钢管生产线和四条热扩无缝管生产线，年生产φ219-1820螺旋缝双面埋弧焊钢管20万吨、φ57-377热轧无缝化钢管20万吨、φ377-630热扩无缝钢管6万吨，产品执行SY/T5037、GB/T9711、GB/T8163、API 5L、API 5CT标准，广泛适用于石油天然气工业、化学工业、普通流体输送及桥梁打桩基建工程等，销往全国27个省、市、自治区，700多个销售网点，可靠的质量和优质的服务赢得了广大客户的认可和欢迎。

Both cilia and flagella have the same internal structure: nine doublets are arranged in a ring and extend the length of the cilum or flagellum, and two more imcrotubules run down the center of the ring.

鞭毛和纤毛都有相同的内部结构：九对排列在一个环上，鞭毛和纤毛伸展着长度，两个以上的微管沿着环的中心向下运动。

The fluctuation characteristics of slug frequency was investigated on the basis of fractal theory for air/water slug flow in a downwardly inclined pipe.

利用非线性分析技术中的分形理论，在长24.73 m、内径0.05 m的小型气液两相流实验装置上对下倾管空气-水段塞流中的液塞频率波动特性进行了研究。

Is divided into two systems of the root-hypocotyl-cotyledon and the epicotyl, and there is only a simple linkage between the vascular tissues of stem and the hypocotyl without any transition.

本研究亦证实了可以将刺槐幼苗的外部形态描述为这两个系统，二者的维管组织只是简单的连接，不存在过渡。

Gorman consulted with more than 500 people over a two-month period before this month's shuffle of the company's finance chief, chief administrative officer and three other top executives.

戈尔曼花了两个月的时间征询了500多位人士的意见，直到本月才安排了公司新的首席财务长、首席行政长和另外三位高管。

In this paper, two types of transport models widely used for water and salinity in soils are introduced; one is physical models, which include convection-dispersion Equation, stream tube model and HYDRUS developed by US Salinity Laboratory. At the same time, the parameter research is related to physical models. Another is system models, such as Transfer Function Model and BP-Network model. The resemblances and the differences among these modeling are compared and analyzed.

介绍了国内外目前应用较为广泛的几种水盐运移模型，包括对流－弥散模型、流管模型和美国国家盐渍土改良中心开发的HYDRUS模型等3种物理模型以及相关的模型参数研究；两种系统模型：传递函数模型和BP人工神经网络模型。

In order to solve the problem that patient's treatment time and intensity is different, we use four LED nixie light dynamic demonstration to demonstrate the treatment time, It has three pressed keys, two pressed keys are used for controlling the treatment time's addition and subtraction, one for the treatment intensity and one used for treatment meter's height level cut.

为了解决治疗强度和治疗时间的问题，我们采用了四位LED数码管动态显示治疗时间，并设置了三个按键，一个用来控制治疗强度，也就是控制激光发射头高低电平的切换，两个按键用来控制治疗时间的加减。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。