硼

Through experiments showed that the use of boron in acid-base titration method, the end discoloration sensitive and accurate.

通过实验表明，用酸碱滴定测定硼含量的方法，终点变色灵敏、结果准确。

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。

It is an extremely important semiconductor; doped with boron , phosphorus, or arsenic, it is used in various electronic circuit and switching devices, including computer chips, transistors, and diodes.

硅是一种非常重要的半导体；掺入硼、磷或砷后，可用于各种电子电路和开关器件，包括计算机芯片、晶体管和二极管。

It is an extremely important semiconductor; doped with boron, phosphorus, or arsenic, it is used in various electronic circuit and switching devices, including computer chips, transistor s, and diodes.

硅是一种非常重要的半导体；掺入硼、磷或砷后，可用于各种电子电路和开关器件，包括计算机芯片、晶体管和二极管。

Pyrex glass is probably the best container for hot acid; I have also used a plastic container held within a metal pot as a "double boiler" for heating specimens in acid.

高硼玻璃也许是最佳的集装箱热轧酸，我又用一个塑料容器内举行的一个金属罐作为"双锅炉"，为供热标本，在酸性。

The construction of branched-chain sugar was carried out by hydroboration-oxidation of a double bond in the corresponding hexose.

通过相应的烯糖9的硼氢化-氧化反应构建了支链糖11，同时分离到一系列还原的副产物7c-e，通过X-射线晶体衍射确定了7c和7e新的手性中心的构型。

A salt that is derived from both boric acid and silicic acid and occurs naturally in dumortierite.

硼硅酸盐由硼酸和硅酸反应而得的一种盐，存在于自然界蓝线石中

Acid and silicic acid and occurs naturally in dumortierite.

硼硅酸盐由硼酸和硅酸反应而得的一种盐，存在于自然界蓝线石中

The educt is boricacid on the surface of the composite, it is believed that oxide reaction takes placeduring the sintering of 〓-BN composite, and part of oxide outgrowth -〓has been left in the sintering body.

通过分析〓-BN复相导电陶瓷表面析出物及〓粉和BN粉的氧化产物，揭示〓-BN复相导电陶瓷中残留的氧化产物——氧化硼是〓-BN复相导电陶瓷引起潮解的主要原因。

According to the device operating principle and energy equipartition theory of thermodynamics,the mechanical-thermal noise is 9.96×10-9 W/Hz1/2,and the background noise is nearly 3.22×10-11 W/Hz1/2,so that the normalized detectivity is deduced to be 9.03×106 cm·Hz1/2/W.

Hz1/2/W。实验表明，器件的噪声中热机械噪声为主要噪声源，大小主要由浓硼硅薄膜的机械性能和器件结构决定，可以通过增大薄膜厚度，减小薄膜面积，从而增加薄膜的特征频率的方法来减小器件受外界振动的影响，但以降低器件的灵敏度为代价。

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％。