钻头

Motheds Fourty lumbar vertebras harvested from ten fresh mature goat cadavers were evenly assigned to one of five groups.

方法将40个成年新鲜山羊椎体，随机分为5组，每组8个，分别在椎体矢状面中点垂直矢状面方向，用不同直径的钻头横向钻通椎体造成缺损，并在材料试验机测试各椎体的强度和刚度。

Our company is a professional manufacturer which produces all kinds of electric hammer drills,steel drills,tappers and other series products.

系中国国内专业生产各种电锤钻头、钢凿、开孔器等系列产品的生产厂家。

The authors designed two kinds of graphite mold for oil coring hits of the same specification (diameter of 216 mm) but with different crown shape, and used finite element analysis software ANSYS to analyse the molds' force condition during the hot pressing process.

本文设计了两种规格相同（直径均为216mm，但端部形状不同的石油取芯钻头的石墨模具，并利用有限元分析软件ANSYS对它们在热压过程中的受力状况进行了分析。

However, current research shows that bits of hair are only present in around half the sinuses in this area of skin.

但是，目前的研究表明，钻头的头发是目前唯一的在一半左右鼻窦在这方面的皮肤。

Scalpels, scalpel handles , drill bits, saws, that are not intended for connection to an active device, and retractors forceps, excavators and chisels.

手术刀、手术柄、钻头、锯等不与有源设备连接的器械，錾和牙科用钻孔器、牵引钳子

Machining requires two kinds of tooling; working-holding devices and cutting tooling, such as drills and reamers.

机加工需要两种工夹具，工件夹持装置与刀具如钻头与铰刀。

Other consumables such as bits, reamers, mud products and cement should also be stocked and inventory managed to avoid delays due to lack of materials.

其它此类消耗品，如钻头、扩孔器、泥浆产品和水泥也应有存货，而且库存管理要避免因材料缺失造成的延误。

The paper discussed the main technical points of bedrock drilling, the design and selection of back reamers for different formations and drilling diameters, detailed construction technology of bedrock with typical engineering cases in China and prospected the future development.

论述了非开挖基岩钻进的技术要点及在不同地层、不同管径施工条件下对非开挖回扩钻头的设计及选用。结合国内几个典型的施工实例，详细阐述了非开挖基岩钻进的施工工艺。展望了该技术的发展前景。

Taps, reamers, drills, saws, milling cutters, burnishing tools, and so on, have all been successfully plated

丝锥、铰刀、钻头、锯片、铣切刀具、磨光工具以及其它等等，所有这些方面的片镀都是很成功的。

The product can be applied for end mills, drill bits, drill reamers, taps, and can clamp any straight cutters and tools.

本产品可使用於铣刀，钻头，铰刀，丝攻及可夹任何直式的刀具及工具

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。