查询词典 vacuum

The chemist made a vacuum in the bell jar when he exhausted the air from it.

化学家抽走钟形瓶内的空气，使其成为真空。

After enriched by flash, benzoic acid-containing fraction was obtained below 210 ℃ and benzyl benzoate -fluorenone-containing fraction was between 220 and 260 ℃,then these fractions were separated by vacuum distillation respectively.

废料通过闪蒸，在210℃以下得到了富集苯甲酸馏分，在220—260℃之间得到了富集苯甲酸苄酯和芴酮馏分；之后对各馏分进行高真空减压精馏，得到了苯甲酸、苯甲酸苄酯和芴酮等产品，纯度分别可达95%，91%和92%。

If rugs cannot be removed, follow this procedure weekly: Apply benzyl benzoate moist powder or 3% tannic acid, then vacuum using a cleaner with an effective filtration system

如果地毯不能拿掉，每周按以下过程处理：把苯甲酸苄酯潮湿粉或3％单宁酸洒在地毯上，然后用真空吸尘器吸尘。

The fraction of benzyl benzoate and fluorenone were enriched from benzoic acid residua by flash distillation,then separated by vacuum batch distillation,so the recovery of benzoic acid residua was implemented.

依据相关文献确定了通过闪蒸法富集苯甲酸釜残液中的苯甲酸苄酯和芴酮馏分，其后减压间歇精馏分离富集馏分，实现了苯甲酸釜残液的回收利用。

Note: Do not use Models 8, 8A, 8B, 8P, 8FR Hose Bibb Vacuum Breakers on frost-free hydrants.

注意：在无霜消防栓上不要使用型号8， 8A， 8B， 8P， 8FR软管龙头真空断路阀。

The first generation of computer was characterized by the most prominent feature of the ENIAC-vacuum tubes.Through 1950,several other notable computers were built,each contributing significant advancement,such as binary arithmetic,random access,and the concept of stored programs.These computer concepts are common in today's computers.

第一代计算机ENIAC以真空管为显著标志，到1950年又制造出了另外几台著名的计算机，而且每一台都取得了很大的进展，如像二进制运算、随机存取和存储程序的概念，这些概念在当今的计算机中仍是普遍使用的。

However, Marshall[1] derived the Planck's black body radiation formula from classical theory without any quantum hypothesizes, and also She[2,3] derived directly the quantization of light energy in vacuum and the Planck radiation formula from classical electromagnetic theory.

可是，英国科学家Marshall却不借助任何量子假设而仅仅依靠经典理论就导出了Planck的黑体辐射公式[1]，中国科学家She也不依靠任何量子理论而仅仅根据经典理论就直接导出了真空中光能量的量子化，还能顺利导出Planck的黑体辐射公式[2，3]。

Vacuum freeze-drying technique for black currant as raw material was investigated.

以黑加仑为原料，对其真空冷冻干燥特性和工艺进行了试验研究。

Factory engaged in professional production and sales of high-speed automatic vacuum molding machine, high frequency plastic welding machine, blister sealing machine, the production of refined aluminum blister mold, copper mold, mold high-frequency, voltage-mode, copper engraving , the use of masks in Blister Packaging, PVC tape, transparent plastic boxes, CD sets, business cards of this, folders, jelly bag, such as soft PVC products, hardware products.

本厂从事专业生产销售全自动高速真空吸塑成型机，高周波塑胶溶接机，吸塑封口机，制作精致吸塑铝模，铜模，高周波模具，电压模，雕刻铜模，使用于吸塑罩包装，PVC胶带，透明胶盒，CD套，名片本，文件夹，果冻袋，等PVC软胶制品，硬胶制品。

T中国机械社区 For example, you can find here descriptions of Air Bag, Air Conditioner, Artificial Snow, Automobile, Battery, Blue Jeans, Chewing Gum, Coin, Compact Disc, Credit Card, DVD Player, Fireworks, Hologram, Jet Engine, Laser Pointer, Liquid Crystal Display, Nuclear Submarine, Paint, Popcorn, Refrigerator, Telephone, Television, Temporary Tattoo, Vaccine, Vacuum Cleaner or Watch.

举例：在这你能发现安全气囊，空调，人造雪，汽车，电池，牛仔裤，口香糖，硬币，光盘，信用卡，DVD播放器，烟花，全息摄影，喷气式飞机，激光指示器，液晶显示器，核潜艇，油漆，花生，冰箱，电话，电视，临时纹身，疫苗，真空吸尘器或是手表。

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％。