查询词典 tackle key problems

It has to be tall because it is like a giant block and tackle

井架必须很高，因为它像一个巨型滑轮组。

When the block and tackle was used, a force of 250 grams lifted a 1,000 gram weight.

当时使用了滑车组，250克的力举起了1，000克的东西。

A block and tackle is needed to lift that heavy machine .

要吊起那么重的机器需要使用一个滑轮组。

A block and tackle can be used to lift heavy weights or to exert large forces in any direction.

这种滑车组可用来提升重物或沿任意方向施加大力。

Their struggle for market dominance in the age of the iPhone has been less about nailing an innovation strategy than playing a hardcore game of block and tackle.

要在iPhone时代争夺市场主导地位，诺基亚需要的不是制定一项创新战略，而是需要打一场没有限制的轮滑比赛。

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.

井架必须很高，因为它像一个巨型滑轮组。我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

"Block and tackle: Combination of pulleys with a rope or cable, commonly used to augment pulling force."

滑轮和滑车组：带绳索和缆绳的滑轮组，通常用于增大拉力。

The design instruction booklet has mainly designed 5 ton hoist reels, the reel axis, as well as the block and tackle.

本设计主要设计了5吨卷扬机的卷筒、卷筒轴、卷筒毂、减速器以及滑轮组。

"Block and tackle: Combination of pulley s with a rope or cable, commonly used to augment pulling force."

滑轮和滑车组：带绳索和缆绳的滑轮组，通常用于增大拉力。

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.

井架必须很高，因为它像一个巨型滑轮组。我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。