绝缘

Based on the analysis of the excitation spectrum, we obtain the superfluid-Mott-insulator phase transition condition, and superfluid velocity of ultracold dilute gas of bosonic atoms in an optical lattice, and point out that the velocity of superfluid can be experimentally adjusted by controlling the parameters of optical lattice.

在长波极限下，色散关系是线性的，这与无外场时的色散关系相同。从激发谱分析可得到superfluid-Mott绝缘相变条件，给出了光格子中超流速度，并指出在实验上可以通过控制光格子参数来改变超流速度。

When he started dressing like a tramp he claimed it was, in part, to advertise his refusal to join polite, ie, hypocritical society.

他把自己打扮的像一个流浪汉并自称某种程度上是为了表现他与政治的绝缘，这里即虚伪的社会。

Examined is the initiation mechanism of flashover along the surface of polytetrafluoroethylene under AC voltage in vacuum.

以聚四氟乙烯为例研究了交流电压下聚合物绝缘材料在真空中沿面闪络发生前的表面发光特性。

In this paper the effect mechanism of the porosity of porous silicon on its thermal insulation is proposed.

研究了多孔硅层孔隙率对其热绝缘性能的影响机制。

Axial insulation structure was optimized to reduce potential gradient in DC high-voltage accelerating tubes of 500 mA.

为了降低500 mA直流高压加速管高梯度区的电位梯度，对加速管轴向绝缘结构进行优化设计。

Such local distortions can be viewed asintroducing impurity scattering potential in paramagneticphase,largely increase the resistivity and lower the metal-insulator transitiontemperature Tm.

这样的局域结构畸变在顺磁态可认为是引入不纯散射势，从而大幅地增大了电阻率、降低了金属-绝缘转变温度Tm，并且Tm随σ2的变化关系是线性的。

D. insulated gate transistor dual-carrier power module and power module.

D。 绝缘闸双载子晶体管功率模块及电源模块。

Are specialized in high-voltage power transmission line protection system insulation design, development and manufacture of high-tech enterprises.

是专业从事高压输变电系统绝缘防护系列设计、开发与制造的高新技术企业。

A novel zero-voltage and zero-current resonant pole soft-switching inverter was proposed to achieve zero- voltage and zero-current switching simultaneously when main power devices turn-on and turn-off. Therefore, turn-on capacitive losses could be reduced for devices which the intrinsic capacitor value cannot be neglected. Additionally losses caused by the tail current can also be reduced, when IGBTs are used as main switches.

提出一种新型的零电压零电流谐振极型软开关逆变器，可以在主功率器件开通和关断时，同时实现零电压和零电流，因此对于内部电容不能忽略的器件，可减小容性开通损耗，当绝缘栅双极型晶体管(insulated gate bipolar transistor，IGBT)作为主功率器件时，也可减小拖尾电流引起的损耗。

SMC insulating plate is molded of electrical grade smc premix under definite pressure and temperature .

SMC 绝缘平板是用电气型 SMC 片材在一定的温度、压力下模压而成。

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％。