查询词典 HF

One was HF/pyridine diazotization reaction at the 4-position of fluorene ring, and the other was Grignard reaction on the 9-position with Grignard reagent of pentafluorochlorobenzene.

使用HF/吡啶法在芴环的4位引入了氟原子，使用五氟氯苯格氏试剂在芴环的9位引入了全氟苯，合成了五个氟取代三联(9，9-二苯基)芴化合物。

In HDF, the diffusive component of HD is combined with the convective component of HF.

在高密度纤维板的扩散组成部分， HD是结合对流短波组成部分。

It is well known that the acetonitrile (CH_3CN) can form stable complex compound with boron halide (BF_3). The sample was complexed in a platinum crucible by acetonenitrile and dissolved by HF: HNO_3 (3:1) solution in a pressure sample dissolver at proper temperature.

基于硼的卤化物(BF_3)能与乙腈(CH_3CN)形成稳定的络合物，将试样置于铂金坩埚内加入乙晴作为络合剂，用HF+HNO_3(3：1)在压力溶样器内加温溶解。

First, two designs of single and double-faced loop antennas for HF RFID tags are presented.

种操作於13.56 MHz 的高频RFID 标签天线设计，分别为单面与双面高频RFID标签天线之设计。

We started with a powerful 12", long-excursion low frequency driver for abundant bass punch and accurate low midrange. Next we joined a high-resolution 1" HF driver for clarity and brilliance with a groundbreaking horn design, ensuring smooth frequency response and ultra-wide sound dispersion so you can move around the stage.

这款产品配有功率强大的 12 英寸长冲程低频驱动器，提供铿锵有力的低音和精准的中低频；高解析度 1 英寸高频驱动器和设计新颖的号筒，提供明亮通透的高音，确保平滑的频率响应和极大的声音扩散角度，使你能在舞台上自由跑动。

By its super long life, HF electrodeless light establishes a separate sect in family of lights.

高频无极灯以其6万小时的超长寿命在照明家族独树一帜。

HF-current in monopolar electrosurgery flows from an active electrode( i.e. the instrument)through the patient's body to a neutral electrode , patient plate,applied o his/her body.

在单极高频外科手术中，高频电流从活动电极流经病人身体到达中性电极(附着在病人身体的病人板)。

I HF electrothermal equipment production company, be applied to smelting. Qian welding.

我公司生产中高频电热设备，可应用于熔炼。

In recent years, people adopt multi- kind measures to counteract eclipse and multi pathway, such as kinds of coding technique, mistake control technique, modulate and demodulate technique, equipoise and expand frequency technique, and these measures effectively boost up the communications ability of the HF communicate system, and lowered the mistake code rate effectively.

近年来，人们更是采用了各种有效的抗衰落和抗多径的措施，如各种编码技术，差错控制技术，调制解调技术，均衡以及扩频技术，这些措施有效的增强了短波信道的通信能力，降低了误码率。

Different escharotic decide the different speed of reaction, thus to cause the great effect on stone carving speed, carving effect, for example, marble whose mainly component is carbonate, so it is better to choose escharotic made from HCI, while for granite , whose mainly component is silicate, it is better to choose escharotic made from HF

腐蚀剂类型的不同又决定了反应速度的差异，进而对雕刻速度、雕刻效果都会生产比较大的影响，例如，以碳酸盐为主要成分的大理石类石材，选择由HCl配制的腐蚀剂比较适宜；而以硅酸盐为主要成分的花岗石类石材，选择由HF配制的腐蚀剂比较适宜。

I think people in this lifetime in a rebirth.

我觉得人在这一生里其实也在轮回。

He had to tie her hands together.

他不得不把她的双手绑在一起。