预加工

Engineering plastics is the plastic granulator pre-processing of raw materials necessary in a part of the common plastic processing equipment.

塑料造粒机是工程塑料原料预加工过程中一个必要的环节，是塑料加工的通用设备。

The damper frame has prepunched holes for ease of installation on site.

风量调节器外框上有一些预加工孔，以方便现场安装。

Over the years, most commonly used by small businesses Tufa Secondary Lead Smelting, using the backward small reverberatory furnace, cupola melting process such as the lack of a corresponding dismantling, pre-processing, smelting equipment, plates, and pulp mixing, lead the general recovery of only 80%~ 85%, the low level of utilization.

最常用的土法再生铅冶炼小企业，用落后的小反射炉，冲天炉熔化过程，如相应的拆除，预加工，冶炼设备，板，纸浆混合缺乏，领导只有80％85％，使用率低的水平普遍复苏。

Organization: Manufacturing Engineering Institute, Chongqing UniversityAbstract: Based on the influences of opposite clearance on computer numerical control machining, the CNC code precompensation method of the CNC machining opposite clearance is introduced, and the precompensation process of opposite clearance is also introduced. The vector operation rules are used to research the algorithm of precompensation, and the proposed algorithm has been applied in a special numerical control equipment.

摘 要：在分析反向间隙对计算机数控（computer numerical control，CNC）加工影响的基础上，提出一种数控加工反向间隙的数控代码预补偿法，给出了反向间隙预补偿流程，并采用向量运算规则进行了预补偿实现算法研究，所提算法已在某专用数控设备上得到应用。

The relationships between the presintering process including the ratio of heating-up, presintering temperature and holding time to alumina and the machiningperformance of its presintered briquet were studied respectively.

分别讨论了改变升降温速率、预烧温度和保温时间与坯体加工性能之间的关系；采用1150℃预烧，保温2小时，及分段控制升温速率的工艺，获得了适合机加工的坯体，能避免加工时的断裂、破碎或崩边。

Influence of the workpiece s pre-hole diameters and passes on thick-wall cylinders hole flanging is investigated by experiment and numerical simulation.

采用实验研究和数值模拟的方法，分析了工件预加工孔径和孔型参数对厚壁筒体翻孔工艺的影响。

Impact tests were conducted on a thin tube (D/t=44) either empty or filled with water using a missile (Dm/t=6) with various nose shapes (flat-nosed, hemisphere-nosed and conical-nosed).

采用三种弹体(平头、半球形和圆锥头，弹体直径与管壁厚度之比D_m／t=6)对空管和高压充水薄壁钢管(径厚比D／t=44)进行了冲击破坏实验，预加工作内压分别为0MPa，5MPa，10MPa和15MPa。

The experimental investigation demonstratesthat (1) the critical perforation energy of pressure pipelines (D/H=15) with pressure OMPa under lateral impact of flat-nose and spherical-nose indenters ranges from 2~3%,the critical perforation energy of empty pipelines is higher 1 ~2% than pipelines filled in water without pressure.

实验研究结果表明：(1)当管梁内注满水，预加工作内压P=0MPa时，对于径厚比D／H=15的厚壁圆管，在平头弹体和球形弹体两种弹体冲击作用下临界穿透破坏能量的降幅在2～3％之间：锥头弹体冲击厚壁空管的临界穿透能量比充水预加内压为P=0MPa的圆管高1～2％：(2)充水管道的预加内压提高，临界穿透能量有一定降低。

Actually, the fire endurance of steel-clad concrete structure is much better.

钢包混凝土结构采用薄钢板预加工成梁柱构件&模板&，现场浇注混凝土的技术，是目前建筑产业化的一种新型结构体系，其结构性能尚处于研究阶段。

The digitisation of the preparation model (44) and the machining of the blank (41) are carried out on the same machine tool (10), at different times.

预加工模型(44)的数字化和毛坯(41)的机械加工在不同时期在同一机床(10)上实现。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。