查询词典 milling

We have presented a practical method for the preparation of propargylic alcohols from terminal alkynes and carbonyl compounds promoted by KOH in the presence of 18-crown-6,and subsequent efficient cyclizations of propargylic alcohols with 2-naphthol catalyzed by InCl_3·4H_2O under the solvent-free ball-milling conditions.Ball milling exhibits its superiority over the reported methods in the preparation of propargylic alcohols and naphthopyran derivatives.

采用机械研磨方法进行了连续的两步固相化学反应的研究：首先，在氢氧化钾和18-冠-6的作用下，端基炔和羰基化合物在机械研磨条件下反应可以高效地生成相应的炔醇化合物；其次，在四水合三氯化铟的催化作用下，生成的炔醇化合物和2-萘酚在机械研磨条件下环加成生成相应的萘并吡喃产物。

Compared with the results of milling Ti〓C〓 in a SPEX mill, the difference in mechanism is suggested to be caused by the effect of plastic deformation on the changes of fine grains and internal strain during milling, and the different heat of formation of TiC and TiB〓, which is the driving force for the reactions.

与在SPEX型高能球磨机中球磨Ti〓C〓的结果相比较，由于球磨输入能量和撞击频率，即撞击能的不同，使相同的成份呈现完全不同的反应机制。

The construction of a universal milling machine is similar to that of the plain milling machine, except that it is more accurate and has sturdier frame, and its table can be swiveled with an angle up to 50°.

万能铣削，其机器构造与平铣很相似，两者的差异的是万能铣削更精确，结构更坚固，它的桌面能旋转50度。

Its principle is use feed pump to put the premixed material into the host milling barrel in which proper mill medium is addedand reasonable designed arc line style blades are installed on the main axis symmetrically.Explosion proof machine transits the energy used for separating and milling to main axis through static electricity proof V tape belt to drive blade rotate in high speed, thus it will offer mill medium with high intensity function which can drive beads do random motion and bump with separated grain to create strong cutting force and then cut the material into ion or dissociation,thereby the material will keep in permanent ultramicron separation state.

其原理是利用送料泵浦将预先已搅拌好的物料送入主机研磨桶内，研磨桶内加入适量的研磨介质，合理设计的弧线型葉片对称地安装在主轴上，防爆電机通过防静電V型皮带把分散和研磨所需的能量传送到主轴上带动分散葉片高速转动，给予研磨介质以高强度的动能，带动珠子无规则运动与被分散物料之颗粒撞击产生强大的剪切力，使物料变为离子或游离子从而达到永久的超细微粒分离状态。

The workpiece fixing with its sipindle hole. The spolting spindle is placed in disc worktable. Its working process is: anticipate on the artificial- automatic position- automatic clamp- automatic milling, after milling unclamped the work piece automatically and taken down the workpiece by the operator.

工件以其主轴孔定位，定位心轴置于圆盘工作台上，圆盘工作台主轴呈卧式安置；它的工作过程是：人工上料——自动定位——自动夹紧——自动铣削，铣毕自动松开工件后由操作者取下。

Through reviewing all kinds of materials which can manufacture the milling ball s at present in our country, it finds that milling ball maked by low chromium cast is suit to the wear environments in waterish grindi.

通过对目前使用的磨球材质进行综合考察，以磨球的性价比为标准，认为低铬铸铁磨球是一种适合于金属矿山湿式球磨机磨损工况的磨球。

The results indicate that the temperature at the surface of roller contacted with bar increases rapidly at the beginning of rolling, and it tends to periodically vary along with the rolling process, and this process will cost about 2 h. The temperature of the roller surface reaches the top point which is about 300 ℃ when the roller is circumrotated to position contacted with bar. New assembled milling rolls have excellent result in milling process.

研究结果表明：与轧件接触的轧辊表面的温度在开始轧制时迅速上升，随着轧制过程的进行，温度趋于呈稳定周期性变化，温度达到稳定的时间大约为2 h；当轧辊旋转到与轧件接触处，温度达到最高，最高温度约为 300 ℃，此时辊套轧辊结构稳定，据此生产的组合式轧辊在轧制过程中性能优越。

The results show that high energy ball milling refines and homogenizes the mixed powders, accelerates the sintering process, and with the increase of milling time, the grain is finer and the alloy is denser. HIP and forging is beneficial to decrease or remove the pole formed during the sinter course, and as the last process, forging breaks the junctions between TiC particles, the microstructure and mechanical properties of alloy are improved.

研究结果表明：高能球磨使粉末细化和成分均匀化，促进烧结进程，随球磨时间的延长，合金组织细化且致密；热等静压和锻造工艺可进一步减小和消除合金中烧结后残留的孔洞等缺陷；锻造作为最后工艺，可使TiC颗粒之间的连接破碎，促使硬质相颗粒弥散分布，从而改善烧结组织，提高合金的致密性及力学性能。

It is mianly equipped with rice hulling machine for milling unpolished rice into polished rice and milling polished rice from rough rice by one time and is widely suitable for rice mills in urban and rural areas.

主要与砻谷机配套、将糙米碾成白米，也可将稻谷一次碾成白米，广泛适用于城市、农村的大米加工厂。

Meanwhile, she is equipped with the most advanced production and inspection machines: one Mitsubishi 4-axis drilling-milling machine center, five 3-axis drilling-milling machine centers, 50 CNC lathers, 14 general lathers, Three-Dimensional Inspection Machine, Angle Inspection Machine, Salt Spray Machine, Surface Roughness Inspection Machine etc.

与此同时，公司装备了现代化的生产和检验设备：一台大型三菱4轴镗铣加工中心，五台三轴镗铣加工中心，50台CNC数控机床，14台普通机床，三坐标检测仪，角度测量仪，盐雾实验机，粗糙度测量仪等等。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。