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The pit cover should be sealed over with tar paper or plastic.

顶盖必须用焦油纸或塑料封闭。

The contents of each case shall be completely weather and dust-proofed by the use of non-permeable film, of suitable strength such as 'Polythene' sheet, tar paper or approved equivalent, to form a sealed moisture barrier.

每个箱内的货物必须保证完全地防尘和不受气候影响，必须使用非渗透性的薄膜加以包裹。

Firstly,to open the hole with tapping machine on steel pipes,and clip the mechanical tee into the hole,around which are sealed by the gasket rings.

首先在钢管上用开孔机开孔，然后将机械三通卡入孔洞，孔四周由密封圈沿管壁密封。

Every tube on the furnace cover has three water cooled jackets which can make the water in the tube rapidly cooled. The role of muffle tank is to maintain the furnace pressure and and ensure the carburizing to work well, it is made of heat-resistant steel,.Carburizing electric furnace is equipped with cooling barrels.It is used to store the parts after treatment, sand sealed grooved are fixed on the barrel covers .

炉盖上的三个管子都有水冷套，以便进入三个管子中的气体快速冷却，马弗罐的作用是维护炉压，保证渗碳的正常进行，它由耐热钢制成，渗碳电炉配有冷却桶，用来存放处理后的零件，捅盖处设有砂封槽。

Lid is equipped with a sampling tube, exhaust pipe, the upper wall of the tank furnace pipe for the importation of used imported ammonia, furnace cooling tank and lid used rubber vacuum sealed and equipped with clamping Lo Shuan.

炉盖上装有取样管，排气管，炉罐侧壁上部的输入管可供氨气输入用，炉罐与炉盖采用水冷真空橡胶密封，并装有压紧螺拴。

At this point suction chamber maximum volume Vs, is also sealed between the two rotors are not discharged from some of the pressure in the exhaust gas state, its volume of Vc, this part of the expansion of gas will be brought back after two into the suction chamber.

此时吸气腔的容积最大为 Vs ，在两个转子之间还封存了部分未被排出的处于排气压力状态的气体，其容积为 Vc ，这部分气体经过两次膨胀后将被带回到吸气腔中。

Since its creation, the company constantly to scientific and technological innovation, product replacement-oriented, scientific and technical personnel through the company's efforts, in fluoroplastics processing based on the development of steel-lined PTFE technology, production of pipes, tower sections, fittings, containers, sealed first-class steel-lined equipment, applicable to a wide range of long life and can transport a variety of media, which has won the trust of their clients.

公司自创建以来，不断以科技创新，产品更新换代为导向，经过公司科技人员的努力，在氟塑料加工基础上，开发出聚四氟乙烯钢衬技术，生产的管道、塔节、管件、容器、封头等钢衬设备，适用范围广、寿命长、能输送多种介质，从而赢得了广大客户的信赖。

If there is join to point to the station that is sealed inside the station, delete as soon as possible.

假如站内有连接指向被封的站，尽快删除。

Sealed a stage to turn in ghost door head circuit, came back again, what can die young is ill-fated did not end, had done not have how many days, tragedy happens again.

都封台在鬼门头转了一圈，又回来了，可夭折的恶运并没有结束，没过多少天，悲剧再次发生。

Various kinds of polypropylene to connect accessories including gaskets, end, and the GE-Osmonics patented self-sealed spring pad.

多种类的聚丙烯连接配件包括垫片、端头，及 GE-Osmonics 专利的自密封式弹簧垫。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"