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To hold a javelin properly you must first find its center of gravity.

想要适当的握标枪，你要先找到它的重心。

Be aware of your gravity center in the region of your hips, because all your movements should start from here.

知道您的重心在该地区的臀部，因为所有的运动应该从这里开始。

Know how to obtain dimensions, weight and center of gravity of the load.

知道如何获取尺寸，重量和重心的负荷。

Challenges are gifts that force us to search for a new center of gravity.

挑战是强迫我们寻找新的引力中心的礼物。

By analyzing and comparing the monitoring technique of rotary kilns axis at present at home and oversea, this paper puts forward a brand-new monitoring method of more advance and more scientific, that is the keyway-phase measure in direction of null displacement of the center of gyration measuring.

本文通过对国内外现有回转窑轴线临测技术的分析和对比，提出了一种更先进、更科学的全新的监测方法，即回转中心测量零位移方向键相法。

The injection holder may round center of gyration for certain angel, which brings convenience to install/remove the screw, rinse the barrel and install the mold.

注射座可围绕回转中心扳转一定角度，以便装拆螺杆，清洗料筒，及方便安装模具。

The center of mass is lower, around half of the machine height.

该中心的质量较低，大约一半的机器的高度。

In reality, of course, both move together toward their common center of mass.

实际上，两者都是朝它们两个共同的质量核心运动。

Containing the Volume and the Center of mass in local space.

包含体积和在局部空间中的质量中心。

What is the speed of the center of mass of the

求两物体的共同质心的速度。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。