双纽线

The major products include: wire and cable encumbered a unit [including wires, power lines; 5,6 type cable, computers; cable PE foam plastic rainbow lights; silica gel; cold feed Rubber lines]; single New Zealand stranding unit; polypropylene extrusion and spinning unit; cable peripheral devices (of the plane or two-color machine, a powder machine, a machine oil, copper preheating , Etc.).

产品主要包括：电线电缆押出机组[含电子线、电源线；5，6类线缆，电脑线；发泡PE线缆；塑料彩虹灯；硅胶线；冷喂料橡胶线等]；单纽绞线机组；丙纶挤出及纺丝机组；线缆周边设备（注条机或双色机、过粉机、过油机、铜线预热器等）。

Based on specific requirement for the top-coal caving mining to the four-bar linkage ,a design method of the four-bar linkage is put forward in the paper in which the least difference function between the lemniscate locus and the power function curve is used as the main objective function.

基于综放工艺对支架四连杆机构的特殊要求，首次提出以双纽线与幂函数曲线之差值最小作为主要目标函数的数学模型，并在此基础上应用VisualBasic5 0编制了四连杆机构的优化设计程序，可以同时实现优化参数显示与优化结果的动态显

The shape of the Bookshelf is a lemniscate—a figure 8 and the mathematical symbol of infinity, which is so perfectly combined with the notion of the infinite potential and lasting power of books.

书架的造型是一个双纽线，由数字8和数学符号的无穷大组成，这一如此完美的结合展示了书籍所有的无限潜力和持久力的概念。

A total of 20 groups of meiofauna in the Southern Yellow Sea: Nematoda, Copepoda, Polychaeta, Kinorhyncha, Bivalvia, Ostracoda, Amphipoda, Tanaidacea, Isopoda, Cumacea, Gastropoda, Gastrotricha, Halacaroidea, nectochaeta, Amphiura, Nemertina, Insecta, Priapulida, Turbellaria and others were identified.

共鉴定出自由生活线虫、底栖桡足类、多毛类、动吻类、双壳类、介形类、端足类、异足类、等足类、涟虫类、腹足类、腹毛类、海螨类、疣足幼体、蛇尾类、纽虫类、昆虫类、曳鳃动物、涡虫类和其它类等20个小型底栖动物类群，小型底栖动物的平均丰度为(1186.12±486.07)ind.10cm~(-2)，其中海洋线虫占绝对优势，其平均丰度为(1063.97±469.98)ind.10cm~(-2)，占小型动物总丰度的89.702%；其次是底栖桡足类，占4.193%。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。