The first mass-produced roller blades, while innovative had some design flaws: they were difficult to put on and adjust, prone to collecting dirt and moisture in the ball-bearings, the wheels were easily damaged and the brakes came from the old roller skate toe-brake and were not very effective.

早期的大量生產(chǎn)的單排輪滑鞋，有一些設(shè)計(jì)上的問(wèn)題：它們很難穿上和調(diào)整欧美一级黄色A片视频，容易沾上污物欧美囯产一区二区激情无套，輪子容易損壞，球軸承容易潮濕666黄色网站，來(lái)自老式輪滑鞋的剎車裝置不是很有效′毛毛黄片。

STRUCTURE: Titanium and composites used extensively, with particular emphasis on corrosion resistance; fully articulated three-blade coaxial contrarotatmg rotors have all-composites blades with carbon fibre and glass fibre main spars, pockets (13 per blade) of Kevlar-type material, and filler similar to Nomex; blades have non-symmetrical aerofoil section; each has ground-adjustable tab; each lower blade carries adjustable vibration damper, comprising two dependent weights, on root section, with further vibration dampers in fuselage; tip light on each upper blade; blades fold manually outboard of all control mechanisms, to folded width within track of main landing gear; rotor hub is 50% titaniuin/50% steel; rotor brake standard; all-metal fuselage; composites tailcone; fixed incidence tailplane, elevators, fins and rudders have aluminium alloy structure, composites skins; fins toe inward approximately 25°; fixed leading-edge slat on each fin prevents airflow over fin stalling in crosswinds or at high yaw angles.

結(jié)構(gòu)：鈦和復(fù)合材料廣泛使用，耐腐蝕性能與特別強(qiáng)調(diào)黄色欧美大尺寸视频，充分闡明三葉片轉(zhuǎn)子同軸contrarotatmg有碳纖維和玻璃纖維的主要棒材全復(fù)合材料槳葉日韩城人视频在线观看，口袋（每刀片13）凱夫拉型材料，類似的Nomex纖維填料黄色网站免费看丝袜；葉片非對(duì)稱機(jī)翼部分18岁禁止1000，每有地面可調(diào)選項(xiàng)卡，每降低葉片振動(dòng)阻尼器進(jìn)行調(diào)節(jié)成年黄页在线视频免费观看大全网站，包括兩部分依賴重根欧美综合午夜不卡视频，在機(jī)身進(jìn)一步減振裝置；小費(fèi)每個(gè)刀片上輕国产精品第99页；刀片倍手動(dòng)舷外所有控制機(jī)制亚洲Av日韩Av综合在线观看，折疊寬度內(nèi)的主起落架的軌道；轉(zhuǎn)子中心為50％titaniuin/50％鋼十八禁羞羞视频爽爽爽免费；轉(zhuǎn)子制動(dòng)標(biāo)準(zhǔn)女人逼男人干97；全金屬機(jī)身，復(fù)合材料tailcone欧美一级黄片小视频，固定發(fā)生機(jī)尾直接看的AV网站，電梯，蛙鞋和方向舵的鋁合金結(jié)構(gòu)萌白酱甜味弥漫福利视频，復(fù)合材料的皮膚影音先锋在线观日韩；鰭鰭在每個(gè)腳趾向內(nèi)約25 °；固定領(lǐng)先的板式翅片防止了側(cè)風(fēng)或氣流停滯在高偏航角度欧美一级二级国产。

If elevator speed down for overloading, broken rope, or brake failure, we should instituted heel, use toe to support , lean on car, and wait for the operation of security agencies to prevent the fall at the end of the accident.

7.1.11電梯如因超載﹑斷繩或剎車失靈而超速下行時(shí)﹐應(yīng)腳跟提起﹑腳尖支持﹑手扶轎廂综合色一色综合久久网88。等待安全保護(hù)機(jī)構(gòu)運(yùn)作﹐防止墜底事故發(fā)生。