Free weight machines are all without branch in order to avoid causing block like tradition free weight machines.

自由训练器材均不含玲片支架以避免传统自由训练器材易阻碍行动之缺点。

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The animal models were established by free weight dropping and knocking method, expressions of NGF in bony callus were determined by immunohistochemical assay.

应用自由坠落重物撞击法建立脑和脊髓损伤动物模型，免疫组织化学方法检测各组骨痂中ngf的表达。

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Free weights and weight machines are popular strength training tools, but they're not the only options. You can do strength training with inexpensive resistance tubing or even your own body weight.

自由负重器械和机器负重器械都是受欢迎的力量训练工具，但它们不是唯一的选择，你可以用并不昂贵的阻力塑料管（译者：我猜是指用硬塑料管之类的代替拉力器啥的），或者甚至用自身体重进行力量训练（译者：俯卧撑嘛）。

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How much more would we actually enjoy healthy living, free from weight judgment?

CNN: Big deal: You can be fat and fit

Are you best working out at a gym or at home, with free weights or weight machines?

CNN: Information overload: Finding fitness that works for you

Its clear that strength training using weight machines, free weights or resistance bands can help build and preserve muscle mass and strength.

FORBES: Why Strength Training May Help You Live Longer