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The stoves are designed to a life time up to 3 years at a cost of about 15 dollars.

这种炉灶的设计寿命是3年，成本大约是15美元。

As a result, margins of refiners have decreased and the cost of crude oil now accounts for 65 to 70 per cent of the price at the pump.

结果，炼油商利润出现下降，而原油成本现已占到加油站产品价格的65%至70%。

"Built of structural steel and reinforced concrete with some limestone facing at a cost of $83 million, the five-story structure actually consists of five concentric pentagons, with 10 spokelike corridors connecting the whole."

&由结构钢和钢筋混凝土建成，耗资8，300万美元，楼高五层，由五座同心的五角形大厦组成，透过十条轮状走廊连接起来。&

"Built of structural steel and reinforce d concrete with some limestone facing at a cost of $83 million, the five-story structure actually consists of five concentric pentagons, with 10 spokelike corridors connecting the whole."

&由结构钢和钢筋混凝土建成，耗资8，300万美元，楼高五层，由五座同心的五角形大厦组成，透过十条轮状走廊连接起来。&

At present, the Macao government has pledged to build a unique style, the cost of 60 million patacas, an area of 7,000 square meters of tourist centre, which is a set entertainment, exhibitions, the meeting was one of the major entertainment centre.

目前，澳门政府已表示要修建一座风格独特、耗资6000万澳门元，占地7000平方米的旅游中心，这是一个集娱乐、展览、会议于一体的大型娱乐中心。

At the base of the receiver's structure is a pressure spring, offering a simple and cost effective way to secure it in place.

底部特殊的压簧结构，用一个简单的方法在合理的成本范围内解决了接收器的定位问题。

This paper introduces the main characteristics of rich Ar mixed gas shield welding with metal powder cored wire, and then designs and experiments on welding parameters, obtains optimum welding specification for this method application on the welding of rock bit assembling , at last, analyses the cost of producing.

介绍了金属粉芯焊丝富氩混合气体保护焊的主要特点，对焊接工艺进行了设计与试验，得出了该方法用于钻头组装焊接的最佳工艺规范，最后进行了成本分析。

Nothing is more jarring than the construction of the CCTV headquarters, a weird-looking twin-tower structure at a cost of more than 5 billion yuan.

最刺目的建筑是中央电视台总部。这座双塔结构的大楼外形怪异，耗资50多亿元。

Aiming at the question of low output and high cost, a two-chambered microbial fuel cell based on the mechanism of microbial metabolism and electron transfer processes was coustructed. Glucose was used as fuel in MFC to harvest electricity through the biocatalysis of saccharomyces cerevisiae, the methylene blue was used as electron mediator of MFC.

针对微生物燃料电池输出功率低、成本高等问题，基于微生物的代谢作用和电子传递机制，采用葡萄糖作为燃料，以亚甲基蓝为电子介体，利用啤酒酵母菌的生物催化作用构建了MFC。

He said his supplier acquired the phones in China at a cost of $18.50 per unit.

他说他的供货商从中国拿货时每件只需支付18.5美元。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。