低技术的

In our country, vehicle-carried invertors still use hard-switching technology and there are many limitations, such as bigger volume and weight, much more harmonious waves, lower switching frequency, which can not achieve high standard sine curve output.

目前国内的车载逆变器仍然属于硬开关技术，不仅体积大，重量大，而且谐波含量大、开关频率低，尚未达到高质量的正弦输出。

How to improve the performance of modulation recognition algorithms in low SNR becomes an important theme for their applications.

如何提高调制识别算法在低信噪比时的识别性能，是调制识别技术工程应用中必须解决的重要课题。

The technology is similar to Volkswagen's recently announced Gasoline Compression Ignition system, which works by using spark plugs during start-up and hard acceleration, while relying on sparkless compression ignition, like a diesel, during low load situations.

这项技术与大众最近宣布的汽油压燃系统很相似，它利用起动和急加速时利用火花塞，而在低负荷情况下就像柴油机一样依靠无火花塞的压缩燃烧。

An underground integrated wastewater treatment system with low energy consumption ,which was called spattering trickling filter,was researched and developed.

开发了一种处理农村污水的低能耗地埋式一体化溅水充氧生物滤池装置，通过拔风和溅水复合充氧技术实现了大幅度节能条件下的好氧生物处理。

With an increasing percentage of future subsea production expected to occur in ultra-deep water, suppliers to t...

简介： 随着未来超深水在海上采油中的采油量所占比例越来越大，世界上的油气供应商不断开发新技术，以使超深水采油更加经济，风险更低。

Alcohol-based fuel is the best substitutional fuel, it can't be generalized because of low heat and lacking efficient combustion.

醇基燃料是一种最具市场竞争力的代用燃料，由于其热值低、缺乏高效的燃烧技术而得不到普及。

Based on communication tableaux extraction suffer real time,veracity and other critical technology indices,exploitation quantization evaluation system on 'verity view' is used.

1概述视频检测技术以其独特的宽视角、低成本、智能化等优势，成为智能交通系统的研究热点。

Ms Tam of the IEA says: We will need all the low-carbon technologies available to us.

IEA的谭女士表示：我们将需要所有可获得的低碳技术。

The method solves the problems of slow response time and low light injury resistant ability of a doped lithium tantalite crystal prepared by the prior art.

它解决了现有技术制备掺杂的酸锂晶体存在响应时间慢和抗光损伤能力低的问题。

The three valued logic modulation technique is usually used in the conventional current source PWM rectifier, and the SPWM control waveform can be obtained by the interphase decoupling.

传统的电流型PWM整流器一般采用三值逻辑SPWM调制技术，通过相间解耦预处理的方法获得实际PWM控制波形，过程复杂且直流电流利用率较低。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。