对折

Abstract］objective: to observe the effects of different root canal file and the restoration of occlusal surface on the fracture resistance of premolars.

目的：观察不同根管锉预备根管及不同邪合面充填物对前磨牙牙体抗折强度的影响。

At present main products are mattress seam side, automatic machine around the spring, spring knotting machine, heat treatment oven spring, spring-string, wire straightening machine, marks the long arm of sewing machines, fabric applique long arm sewing machines, multi-function copy - Machines, bending machines wire border, the border wire welder, automatic machine Qu spring, mattress deduction for wear, Da Baoji, a charter, mattresses production and use pneumatic tools for hotels, guest houses, supporting the product at the end of a mattress wire Dozens of beds, and other products.

目前主要产品有床垫缝边机，自动绕簧机，弹簧打结机，弹簧热处理烘箱，串簧机，钢丝校直机，长臂商标曲线缝纫机，长臂面料补花缝纫机，多功能拷边机，边框钢丝折弯机，边框钢丝对焊机，自动曲簧机，床垫穿扣机，打包机，开包机，床垫生产用气动工具及为饭店、宾馆配套的产品床垫钢丝底床等几十种产品。

The findings showed both the 20% water-quenched slag concrete and plain concrete have close mechanics characteristics. In the freeze-thaw cycle endurance test, its strength declines slightly. The 20% substitution of cement with water-quenched slag from plasma might be used as eco-cement.

研究结果显示，20％水淬熔岩混凝土具有与普通混凝土相近之力学特性；在冻融循环耐久性试验中，其对混凝土强度折减较小，显示20％水淬熔岩混凝土可作为生态环保水泥。

Royston and his 36 Santa's helpers collect, pack and give out gifts and candy -- 15 tons of toys and goodies donated by folks and businesses. Handmade dolls, clothes, pretzels, stuffed animals, basketballs, three-ringed binders and pencils for school.

Royston和他的36个圣诞助手负责对礼物和糖果进行收集，包装和分发---这些玩具和糖果重达15吨，全由当地人和企业捐赠，有手缝制的洋娃娃，衣服，椒盐卷饼，绒毛动物，篮球，以及上学用的三折叶活页夹和铅笔。

We know that every new paper weight regardless of type, has a certain degree of thickness, when a piece of paper folding times a little while and page number spacing error; when all the foldedthe of the final book in a manner worthy of piled up and preparation to become a book condrctor, on the accuracy of it.

我们知道，每一种纸张不论种类、克重都有一定的厚度，当一张纸折叠次数不多时，页码间距误差不大；当所有折好的书帖最后采用叠配法成为一本书芯时，对精度的影响也不大。

One of the swiveling frames of wheels under each end of a railroad car or trolley car.Its longish hood and two-tone interior cloak a responsive chassis that incorporates a fully independent suspension and rack-and-pinion steering, tuned to handle everything from rough pavement to highway curves.

它修长的折式车篷和两种色调的内部装饰下，隐藏着是一个可对驾驶做出灵敏反应的底盘，其中融合了一个完全独立的悬架和齿条齿轮式转向装置，它们可应付起伏不平的路面和高速公路转弯的各种情况。

Its longish hood and two-tone interior cloak a responsive chassis that incorporates a fully independent suspension and rack-and-pinion steering, tuned to handle everything from rough pavement to highway curves.

它修长的折式车篷和两种色调的内部装饰下，隐藏着是一个可对驾驶做出灵敏反应的底盘，其中融合了一个完全独立的悬架和齿条齿轮式转向装置，它们可应付起伏不平的路面和高速公路转弯的各种情况。

Its longish hood and two-tone interior cloak a responsive chassis that incorporates a fully indep dent suspension and rack-and-pinion steering, tuned to handle everything from rough pavement to highway curves.

它修长的折式车篷和两种色调的内部装饰下，隐藏着是一个可对驾驶做出灵敏反应的底盘，其中融合了一个完全独立的悬架和齿条齿轮式转向装置，它们可应付起伏不平的路面和高速公路转弯的各种情况。

A device or an illustration that pops up.Its longish hood and two-tone interior cloak a responsive chassis that incorporates a fully independent suspension and rack-and-pinion steering, tuned to handle everything from rough pavement to highway curves.

它修长的折式车篷和两种色调的内部装饰下，隐藏着是一个可对驾驶做出灵敏反应的底盘，其中融合了一个完全独立的悬架和齿条齿轮式转向装置，它们可应付起伏不平的路面和高速公路转弯的各种情况。

A toothed bar that meshes with a gearwheel, a pinion, or another toothed machine part.Its longish hood and two-tone interior cloak a responsive chassis that incorporates a fully independent suspension and rack-and-pinion steering, tuned to handle everything from rough pavement to highway curves.

它修长的折式车篷和两种色调的内部装饰下，隐藏着是一个可对驾驶做出灵敏反应的底盘，其中融合了一个完全独立的悬架和齿条齿轮式转向装置，它们可应付起伏不平的路面和高速公路转弯的各种情况。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。