It has to be tall because it is like a giant block and tackle, and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.

井架必須很高，因為它像一個巨型滑輪組亚洲欧美理论一二区中文字幕。我們必須把很長的鉆桿一節(jié)節(jié)地鉆入地下亚洲h成视频，然后再從地下拉出來。鉆桿頂部安裝的發(fā)動機帶動鉆桿旋轉(zhuǎn)中文字幕在线www，它的底部裝有鉆頭岛国毛片久久69。

It has to be tall because it is like a giant block and tackle, and we have to lower into the ground NEW CONCEPT ENGLISH-BOOK FOUR and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.

井架必須很高，因為它像一個巨型滑輪組高清亚洲福利网站你懂得。我們必須把很長的鉆桿一節(jié)節(jié)地鉆入地下最新黄色网站一级，然后再從地下拉出來。鉆桿頂部安裝的發(fā)動機帶動鉆桿旋轉(zhuǎn)欧美一级高清电影免费，它的底部裝有鉆頭日韩欧美亚中州在线观看。

It has to be tail because it is like a giant block and tackle, and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom

井架必須很高，因為它像一個巨型滑輪組在线观看中文字幕小说区。我們必須把很大的鉆桿一節(jié)節(jié)地鉆入地下拍自拍亚洲手机黄色视频在线观看，然后再從地下拉出來。鉆桿頂部安裝的發(fā)動機帶動鉆桿旋轉(zhuǎn)国产精华Av在线导航网站，它的底部裝有鉆頭欧美第一页激情视频。

It has to be tall because it is like a giant block and tackle ,and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are roated bu an engine at the top and are fitted with a cutting bit at the bottom.

井架必須很高，因為它像個巨型滑輪組www.最新黄色视频.com。我們必須把很長的鉆桿一節(jié)節(jié)地鉆入地下在线亚洲中文一区，然后再從地下拉出來。鉆桿頂部安裝的發(fā)動機帶動鉆桿旋轉(zhuǎn)欧美黄色精品，它的底部裝有鉆頭亚洲日韩午夜。

It has to be tall because it is like a giant block and tackle, and we have to lower into the ground and haul out of the ground great lengths of drill pripe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.

鉆井必須很高，就象一個巨大的滑輪久久久久久精品人妻网。我們必須降到地下然后將鉆桿拔出來精品国产福利在线色图。鉆桿的頂端有一個馬達使它旋轉(zhuǎn)而底部是一個尖頭。

Raised, lowered, or positioned equipment, tools, and materials for installation or use using hoist, handline, or block and tackle.

用吊車国产aaaaaaaa网站、手線或滑輪組及轆轤久久免费看少妇高潮A片农村，將要裝置或使用的設(shè)備、工具欧美视频日韩在线，及材料国产手机视频在线观看你懂的，升高视频在线观看好爽好紧好舒服、降低或放好位置。

Traveling Block - The block and tackle which is rigged with the crown block by multiples of drilling line strung between the crown block and the traveling block.

游動滑車：通過排列穿過天車和游動滑車的多股鉆井繩和天車裝配在一起的滑輪及裝備亚洲国产人成自久久国产。

Those who had caught sharks had taken them to the shark factory on the other side of the cove where they were hoisted on a block and tackle, their livers removed, their fins cut off and their hides skinned out and their flesh cut into strips for salting.

而那些捕到鯊魚的漁夫色黄片子女人男人丝袜黑打炮视频，也已經(jīng)把那些鯊魚送到在小海灣另一邊的鯊魚工廠去了，在那兒鯊魚被滑輪垂吊起來中文字幕强，然后被取下肝在线亚洲黄色中文字幕视频，割掉鰭，剝下皮www.4438日韩无码，肉也被割成條狀準備用鹽來腌国产拍线一区观看。

This instruction booklet altogether divides five chapters, the emphatically design calculation steel wire and the block and tackle organization, carried the template, the elevating mechanism, move horizontally the warehousing organization as well as storehouse and so on the main system design calculation.

本說明書共分五章，著重設(shè)計計算了鋼絲繩及滑輪組機構(gòu)日韩AV无码一区二区三区、載車板人人操人人草人人爱、升降機構(gòu)、橫移入庫機構(gòu)以及庫架等主要系統(tǒng)的設(shè)計計算日本精品一区。

They divided it into cakes by methods too well known to require description, and these, being sledded to the shore, were rapidly hauled off on to an ice platform, and raised by grappling irons and block and tackle,worked by horses, on to a stack, as surely as so many barrels of flour, and there placed evenly side by side, and row upon row, as if they formed the solid base of an obelisk designed to pierce the clouds.

他們把冰切成一方塊一方塊人人干人人插视频，那方法是大家都知道的，無須描寫的了91亚洲精品，這些冰塊放在雪車上多人乱p欧美在线观看，車到了岸邊，迅疾地拖到一個冰站上国产一级特黄妇女A片徽啪，那里再用馬匹拖的鐵手影音先锋色文顶级一小说网站首页、滑車、索具搬到一個臺上wwwA片，就像一桶一桶面粉一樣女人被爽到高潮视频动态图，一塊一塊排列著，又一排一排地疊起來国产精品亚洲黄色录像，好像他們要疊一個聳入云霄的方塔的基礎(chǔ)一樣操熟女屄视频。