查询词典 high-class

The invention relates to an amplifier circuit containing a high-frequency transistor (1) and having a circuit (2) for adjusting the operating point, which provides a base current for the high-frequency transistor (1) according to the voltage released at a resistor (3) which is connected in the collector ring of the high-frequency transistor (1). The circuit (2) has a differentiating unit (20), fed by the supply voltage, which compares the voltage released at the resistor (3) with a reference voltage.

带有高频晶体管(1)的放大器电路具有一个用于工作点调整的电路(2)，其依赖于在连接在高频晶体管(1)的集电极电路中的电阻(3)上下降的电压为高频晶体管(1)提供基极电流，电路(2)具有一个由供电电压馈电的差分节(20)，其把在电阻(3)上下降的电压与基准电压比较。

OF super grade, Grade I and II is exported. Fine talcum powder is of high whiteness in very fine granula tion which feels soft and slippery, so it is used in hitech fields, such as paint and coating industry, it is also used in paper making industry. Besides calcine talcum powder from 200 mesh to 1250 mesh is used in china and pottery industry. The following kinds such as Qixia3-grade blocks, 3-grade grains, 4 grade block and 4-grade grains are used as raw materials of china and pottery products. When 15% 80% of talcum powder is added in porcelain ,the Final china products is of very heat expansion, but of high strength, transparency and brilliance in colure and of very high percentage silicon , alg but of very low percentage of iron and aluminium.

特、一、二级产品90%以上出口；超微细滑石粉具有较高的白度、极细的微粒，柔软而有滑腻感，主要应用于高新技术领域，在油漆、涂料工业中用作体质填充料，在造纸工业中，用于涂层和涂料，可以改善纸张光泽和着墨性等；200目—1250目煅烧滑石粉主要应用于陶瓷釉面等；栖霞三级块、三级小粒、四级块、四级小粒是陶瓷生产的主要原料，在瓷土中掺入15%—80%的滑石粉，制成的各种瓷器，具有极少的热膨胀和温膨胀性，有强度高、不龟裂、增强韧性及透明度高、色彩明亮美丽等特点，并且以特别高的硅、镁和特别低的铁、铝含量而闻名陶瓷行业。

Capital invested in high-risk or relatively high-risk securities and enterprises, in expectation of commensurately high returns.

投资于高风险或相对高风险的证券和企业，以期得到相应的高收益。

"Communization of high school" and "Specialization of comprehensive high school" are the main goals of improving the problems in comprehensive high schools.

七、高中职社区化与综合高中特色化是改善综合高中问题的两大目标。

In order to drive a high impedance load such as HPM sources, it is necessary to commutate FCG's long pulse width, high-current and low voltage pulse to a short pulse with high voltage.

为用FCG驱动象HPM源这样较高阻抗的负载，必须使用脉冲功率调制电路把FCG产生的低电压、大电流、上升时间长的电压脉冲转化为高电压、上升时间短的脉冲。

The character s of high-precision, high-speed, high-reliability and compacted structure is a perfect combination of motion and control.

产品的高精度、高速度、高可靠性及结构紧凑等特征，是我们在运动与控制方面研究成果的结晶。

The comparison shows the advantages of series resonant HAPF operating in high-voltage system is low cost and high effective. This method can help to design the other kind of filtering system for High capacity applications.

其中的一些设计思路和工程经验还可推广到其它大型滤波和无功补偿装置的设计和应用中，为推进大功率的HAPF的实用化进程提供有益的参考和借鉴。

Products with high efficiency, high reliability and complete automatic protection function of circuit and electromagnetic interference, electromagnetic radiation of small, to provide users with high-quality power supply.

产品以高效率、高可靠性和完备的电路自动保护功能和电磁干扰、电磁辐射小，为用户提供高品质电源。

His hope does contest of high school unripe composition face Jiangsu the province is all high school student, comprehensive examine the agonistic activity of a of student study ability and integrated quality high standards, make the composition contest brand that gives Jiangsu.

他希望把高中生作文大赛办成面向江苏省全体高中学生、全面检验学生学习能力和综合素质的一项高规格的竞赛活动，打造出江苏的作文竞赛品牌。

Hollow sucker rod is a kind of special product designed for production of high pour point, high condensation, high paraffin crude oil. Its connector and coupling is welded with sucker rod body in friction welding. We can get the function from the hole of hollow sucker rod. The properties of hollow sucker

空心抽油杆是用于开采"高凝、高粘、高含蜡"原油的专用产品，它是将空心杆头、接箍通过摩擦焊，焊接到无缝钢管两端形成的抽油杆，其管柱内部形成一条通道，利用这一孔道实现空心抽油杆的各种功能。

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。