通风孔

This article illustrates pre-control of construction security of manual digging pile,and introduces construction security control measures of manual digging pile from construction quality of breast wall,process safety technique,blasting,construction demand of electricity,ventilation,and detection of poison gas,in order to ensure safe and smooth implementation of construction.

对人工挖孔桩施工安全事前控制进行了阐述，并从护壁的施工质量、过程安全技术、爆破、施工用电、通风及毒气检测等方面介绍了人工挖孔桩和施工安全控制措施，以保证施工的安全顺利进行。

The mentioned relationships are as follows: the relation between the total equivalent orifice or the total resistance of mines and the ventilation system of ...

这几项关系是：(1)矿井总等积孔或总风阻与矿井通风系统的关系；(2)矿井总等积孔或总风阻与风流某些断面上的空气压力的关系；(3)矿井总等积孔或总风阻与机械风压、自然风压的关系。

Plymesh aeration pads are used to fluidize and to optimize the flow rate of powdered and pulverized products in silos and in bunkers.

复合网孔通风垫能用于流料仓和料斗里的粉末和碎末产品，并使其流动速率最优化。

Screen main products are rice, flour sieve; mining, metallurgical, chemical, air conditioning and building industries for ventilation, cooling, filtering, screening, and decorating various types of punching plate; mill with Hammer, Pin; metres Jimi knife; medicine, food industry with stainless steel disk, such as freeze-dried-basket, baskets, boxes and various metal stamping, drawing more than 800 pieces, and other species, more than 2,000 kinds of model specifications.

主要产品有米筛、粉筛；矿山、冶金、化工、空调、建筑等行业用于通风、散热、过滤、筛分、装潢的各型冲孔板；粉碎机用锤片、销轴；米机米刀；医药、食品行业用不锈钢盘、冻干盘等各种篮、筐、盒及各种五金冲压、拉伸件等800多个品种，2000多种型号规格。

As for different requiremint for the lustration rate, we can provide you round-hole 20-30%,strip-hole 40-50% perforated panel.

针对各种洁净室洁净度的不同需求，可提供圆孔20%—33%、条孔40%—50%开孔率的高架铝合金通风地板。

Furnace body has three holes fenestrae lower abdomen, for ventilation.

炉体有三个洞窗孔小腹，通风。

On the crucible salt bath's furnace shell is loaded with the circular upper hood, the crown has the air vent to put through the wind system series, removes the noxious gas, lower part the upper hood has the cover gate which and the port hole two leaves may rotate.

坩锅盐浴炉的炉壳上部装有圆形上罩，顶部有排气口可接通风系统，以排除有害气体，上罩下部有两扇可转动的罩门和观察孔。

On basis of the features of Yuanliangshan tunnel, jet ventilation technology has been successfully used in the construction of the tunnel and the calculation method for the air volumes of construction jet ventilations are improved. The calculation method for the air volumes of construction jet ventilations is not only suitable for gas tunnels consisting of twin tubes, but also suitable for long tunnels with ancillary adits and large-scale underground structures.

在圆梁山隧道的施工通风中，结合该隧道特点，成功实施了射流通风技术，并进一步完善形成了施工射流通风的风量方法，该方法不仅适用于有平行双孔的瓦斯隧道，同时也可在有辅助坑道的长大隧道或者大规模地下空间的施工通风中推广应用。

Machinable a variety of custom-made machinery and a variety of decorative guard plate, various models of machine screen, thermal network, the ventilation network, filters, filters, filter network, network silencers, oil slurry at the end of net cage on the ground grain depot network engineering and installation of ventilation.

可加工定做各种机械护罩和各种装饰用孔板，各种型号机筛网，散热网，通风网，过滤网，过滤器，滤芯网，消音网，石油泥浆底网，粮库地上笼通风网工程及安装。

The original patent specified a booth made of wood, four or five feet square, with a domed and ventilated roof and a strong door.

首创电话亭的专利人将亭子设计为木头制成，4至5平米大小，带通风孔的拱顶，一扇坚固的门。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失