不通风

Natural ventilation is the ventilation of a building with outside air without the use of a fan or other mechanical system.

自然通风是建筑物不使用排风扇或其他的机械系统而跟外面空气流通。

Provides draught- free ventilation without interfering with the driver′s field of vision.

提供无气流的通风，不干扰驾驶员的视野。

Produced by centrifugal fans, axial flow fan the fire of high temperature flue gas, construction ranked Series air blower, air-conditioning ventilation system and smoke control system of fire prevention, smoke valve, air, air flow regulating valve, muffler, inorganic non-combustible fiberglass duct and so on, reliable quality, prompt delivery, perfect after-sales service.

公司生产的离心风机、消防高温排烟轴流风机、建筑用系列排送风风机、空调通风系统和防排烟系统的防火、排烟阀、风口、风量调节阀、消声器、无机不燃玻璃钢风管等，质量可靠，交货快捷，售后服务完善。

Installation and maintenance of flues and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases).

额定热载不超过70kW的燃气灶的烟道及通风装置(1类、2类和3类家用燃气)的安装和维护。

Theca box pressure gauges are used to measure micro pressure and negative pressure of gas that has no danger of explosion and does not erode alloy.

测量对铜合金不起腐蚀作用、无爆炸危险的气体的微压和真空，广泛应用于锅炉通风、气体管道、燃烧装置及其它类似设备上。

For example, Xiao Yue line into the wall of some counters have also set up the pants with pulley frame, can be neatly put up dozens of pants, and maintain ventilation without folds.

例如怡萧行的一些入墙柜还设置有带滑轮的裤架，可以整齐地挂上几十条裤子，保持通风而不会有褶皱。

According to the working principle of engine cooling system,the analysis was performed on the construction and layout of cooling system of XING WANG ZA6440 light bus. It is pointed out that the main reason leading to the engine overheat is poor sealing of the radiator cap,unreasonable selection and layout of the ventilation system.

根据发动机冷却系的工作原理，通过对星王ZA6440轻型客车冷却系的结构及总体布置分析，指出导致发动机过热的主要原因是压力盖密封不良、通风系统选择布置不合理等造成的。

According to the campus general satisfaction survey aimed at teachers and students of Dali Senior High School, Taichung County, ambient lighting of north/south-facing buildings is better than that of east/west-facing ones; old Fu-tien and You-cing Buildings are more superior to new buildings in ventilation and sound insulation. Most of the items about the general impression on campus reveal a higher satisfaction rate. 65.7% of the teachers and students agree to the statement that "I like my school as a whole."

在台中县立大里高中师生对整体校园满意度调查的具体成果为「南北向大楼的自然采光优於东西向」；「旧建筑的福田楼及友情楼在通风效果及隔音效果上均优於新建筑」；在校园整体感觉方面大部分项目满意的比例皆高於不满意的比例；「综合而言我喜欢我的学校」，同意的占65.7%，可知大部分师生对台中县立大里高中是能认同的。

The paper describes the reason why the 1000MW ultra supercritical steam turbine with HP single bypass valve using HP casing start-up was not applied with HP exhaust non-return valve and introduces the methods to prevent over-speed for load rejection,HP casing overtemperature and water admission.

论述了采用高压缸启动方式的带高压一级旁路的1000MW超超临界汽轮机不设高排逆止门的依据及其防止汽轮机甩负荷超速、高缸超温与进水的方法：一是在高压导汽管上加装通风阀，二是在冷再管上加装通往凝汽器的排汽管，三是在冷再管的低位加装能显示水位、自动报警及自动疏水的疏水罐。

It is also applicable to measure micro-pressure and negative pressure of neutral gases without danger of explosion in boiler draft equipments, which cause no erosive attack on copper alloy. In addition, it has a function of dual two-position adjustment, so as to realize position

YEJ-121型矩形接点膜盒压力表是适用于锅炉通风设备对铜合金不起腐蚀作用的和中性、无爆炸危险的气体的微压和负压进行测量并具有双二位调节的作用，以实现位式调节或超限报警作用。

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